Top 10 web hosting

Today  in the world of commerce internet is used widely.Big Enterprise gain more advantage of this by advertising on internet,they can display ads on various sites and reach millions of people in the world.And for this web hosting is used.

Introduction:-

A web hosting service is a kind of service which allows a firm or organization  to make their own website accessible via the World Wide Web.Web hosting companies owns the server which they provide on rents or lease of years use by there client as well as provide connectivity.Web hosts can also provide data center space and connectivity to the Internet for servers they do not own to be located in their data center, called colocation.

Types of web hosting:-

  • Free web hosting service: Free web hosting is offered by different companies with limited services, sometimes advertisement-supported web hosting, and is often limited when compared to paid hosting.
  • Shared web hosting: one’s website is placed on the same server as many other sites, ranging from a few to hundreds or thousands. Typically, all domains may share a common pool of server resources, such as RAM and the CPU. The features available with this type of service can be quite extensive. A shared website may be hosted with a reseller.
  • Reseller web hosting: allows clients to become web hosts themselves. Resellers could function, for individual domains, under any combination of these listed types of hosting, depending on who they are affiliated with as a provider. Resellers’ accounts may vary tremendously in size: they may have their own virtual dedicated server to a collocated server. Many resellers provide a nearly identical service to their provider’s shared hosting plan and provide the technical support themselves.
  • Virtual web hosting: also known as a Virtual Private Server (VPS for short) divides server resources into virtual servers, where resources can be allocated in a way that does not directly reflect the underlying hardware. VPS will often be allocated resources based on a one server to many VPSs relationship, however virtualisation may be done for a number of reasons, including the ability to move a VPS container between servers. The users may have root access to their own virtual space. This is also known as a virtual private server or VPS. Customers are sometimes responsible for patching and maintaining the server.
  • Dedicated web hosting: the user gets his or her own Web server and gains full control over it (root access for Linux/administrator access for Windows); however, the user typically does not own the server. Another type of Dedicated hosting is Self-Managed or Unmanaged. This is usually the least expensive for Dedicated plans. The user has full administrative access to the box, which means the client is responsible for the security and maintenance of his own dedicated box.
  • Managed hosting services: the user gets his or her own Web server but is not allowed full control over it (root access for Linux/administrator access for Windows); however, they are allowed to manage their data via FTP or other remote management tools. The user is disallowed full control so that the provider can guarantee quality of service by not allowing the user to modify the server or potentially create configuration problems. The user typically does not own the server. The server is leased to the client.
  • Colocation web hosting services: similar to the dedicated web hosting service, but the user owns the colo server; the hosting company provides physical space that the server takes up and takes care of the server. This is the most powerful and expensive type of the web hosting service. In most cases, the colocation provider may provide little to no support directly for their client’s machine, providing only the electrical, Internet access, and storage facilities for the server. In most cases for colo, the client would have his own administrator visit the data center on site to do any hardware upgrades or changes.
  • Cloud hosting: is a new type of hosting platform that allows customers powerful, scalable and reliable hosting based on clustered load-balanced servers and utility billing. Removing single-point of failures and allowing customers to pay for only what they use versus what they could use.
  • Clustered hosting: having multiple servers hosting the same content for better resource utilization. Clustered Servers are a perfect solution for high-availability dedicated hosting, or creating a scalable web hosting solution. A cluster may separate web serving from database hosting capability.
  • Grid hosting: this form of distributed hosting is when a server cluster acts like a grid and is composed of multiple nodes.
  • Home server: usually a single machine placed in a private residence can be used to host one or more web sites from a usually consumer-grade Broadband connection. These can be purpose-built machines or more commonly old PCs. Some ISPs actively attempt to block home servers by disallowing incoming requests to TCP port 80 of the user’s connection and by refusing to provide static IP address. A common way to attain a reliable DNS hostname is by creating an account with a dynamic DNS service. A dynamic DNS service will automatically change the IP address that a URL points to when the IP address changes

Below are the Top 10 web hosting companies:-

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Global warming

Introduction:-

“Global” and “warming” are perhaps the two most important words used to justify the approaching governmental control of our economy. In reality, global warming is barely occurring: In the 30 years starting in 1977, warming amounted to 0.32 degree Fahrenheit per decade, and in the next hundred years it is estimated to be about half a degree per decade.

So global warming looks like neither the alarmists’ serious threat, nor an immediate crisis that requires governmental control of America’s economy to reduce it. Nevertheless the government solution to these increases–the Waxman-Markey bill, which passed the House earlier this year–is estimated to lower global temperatures only about 0.18 degree Fahrenheit in the next 90 years.

And now comes the new Boxer-Kerry Senate bill, which would require a 20% reduction in greenhouse-gas emissions by 2020.

As a practical matter, what would such a reduction mean to us and our economy? Steven Hayward of the American Enterprise Institute calculates that a 20% reduction would mean cutting America’s greenhouse gas emissions to our 1977 levels, and that would radically change both the U.S. economy and our personal lives.

As Mr. Hayward notes, we had 220 million people in America then; today we have 305 million. In 1977 our economy was produced $7.2 trillion (in 2008 dollars); today it is twice as large, at $14.2 trillion. Back then we had 145 million vehicles on the road; today we have 251 million. America has substantially grown, and our energy needs have grown as well.

So what would we have to do get back to 1977 emission levels and meet the Boxer-Kerry requirement? First, car and truck miles travelled would have to be reduced by one-third (or fuel efficiency improved by one-third, hard to do in 10 years), which would seriously reduce travel and transportation, and likely force changes in automobile design that consumers would not like.

Next, the amount of coal burned to generate electricity would have to be cut in half. So we would close more than 200 of our coal-fired power plants, and as Mr. Hayward says that would reduce our electricity supply by some 800 million megawatts. To replace those millions of megawatts with non-hydro renewable power sources like wind, solar and geothermal power would be virtually impossible. We have about 130,000 megawatts generated by them now, and the growth rate of these power sources over the last five years suggests it would take 97 years to make up for the shutdown of 200 coal-fired plants.

Nevertheless, the Boxer-Kerry bill, at least in its draft form, is an improvement over Waxman-Markey. It is in favor of nuclear power–which, in Sen. John Kerry’s words, “needs to be a core component of electricity generation if we are to meet our emission reduction targets”–though it does not mention the construction of the 70 to 100 nuclear plants we would need to add to the 104 we now have in order to reduce carbon dioxide emissions. It is also in favor of expanding offshore drilling and natural-gas exploration and production, something that Waxman-Markey does not support.

On the other hand, Boxer-Kerry would be as bad for our economy as Waxman-Markey in two respects. First, it too contains the protectionism of the Waxman “border adjustment program” to begin a new American policy of putting tariffs on goods imported from counties that do not adopt acceptable environmental standards, which surely would result in retaliation tariffs on our exported goods.

And the bill aims to achieve targeted emission declines through a similar cap-and-trade program involving carbon permits. This is said to cover only 2% of U.S. businesses, but it would drive up the cost of electricity, food and other goods for all households and businesses, and its 20% emission reduction is even larger than the 17% in that bill (our current recession has already reduced emissions by 6%, which Sens. Kerry and Barbara Boxer apparently think is real progress). The bill would reduce the portion of emissions covered by the caps, eliminating regulation of methane emissions from coal mines, landfills, and oil and gas pipeline distribution.

Both bills include offsets which would allow emitters (and the politicians in Washington) to claim we are hitting our reduction targets while actually emitting more carbon by “investing” in projects in the U.S. and other countries that ostensibly reduce carbon (whether or not they actually do)–a process that is fraught with potentials for fraud and abuse.

And both bills suffer from the flawed logic of thinking a cap-and-trade system would actually work, when we know it has not worked in Europe, and that the only way a cap-and-trade system could meet its emission targets in the U.S. is by shrinking our economy.

Congressional Budget Office director Douglas W. Elmendorf testified last week before the Senate Energy and Natural Resources Committee that the cap-and-trade provisions of the House bill would reduce the U.S. gross domestic product by 0.25% to 0.75% in 2020 ($60 billion to $180 billion), and by 1.0% to 3.5% in 2050.

Like Waxman-Markey, Boxer-Kerry would expand the control the government has over the American economy, businesses, and individuals. It would have little impact on reducing global warming but would significantly depress our economy. One wonders if the purpose of the Boxer-Kerry bill is really just to give the U.S. something to take to Copenhagen for the United Nation’s Climate Change Conference in December.

High-cost policies with low-impact results are not in America’s best interests, so we should postpone both bills and think through more clearly our desired energy policies.

Egypt

Introduction:-

The Arab Republic of Egypt occupies the northeastern corner of the African continent and the Sinai Peninsula. It has an area of about 390,540 square miles (1,011,500 square kilometers), including the 23,440 square miles (60,710 square kilometers) of the Sinai. Ninety-nine percent of the Egyptian population lives on only 3.5 percent of the land. Most of them are in the Nile River valley and large, fertile delta of the river. Egyptis bordered on the south by the Republic of the Sudan and on the west by Libya. Its northern coast is on the Mediterranean Sea, and its eastern coasts are on the Red Sea and the Gulf of Aqaba, between Sinai and Saudi Arabia. The Gulf of Suez and the Suez Canal separate African Egypt from Sinai. In northern Sinai Egypt’s border with Israel was fixed in 1979 by a peace treaty, though the disputed territory did not return to Egyptian sovereignty until 1982.

The Land and Climate:-

The headwaters of the Nile River are in the highlands of East Africa. The Nile flows northward across the Sudan and enters Egypt near Wadi Halfa. It is 4,130 miles (6,650 kilometers) long, with 960 miles (1,545 kilometers) in Egypt. Annual flooding is a natural feature of the Nile. Fed by summer rains in the highlands, the flood travels northward, reaching Egypt in August.

The Upper Nile is confined to a narrow valley that is no more than 2 miles (3 kilometers) wide. Outcrops of resistant granite rock form stretches of cascades and rapids called cataracts. The First Cataract is at Aswan, the only one in Egypt. A dam was built here in 1902 to help control the floodwaters for irrigation. Four other cataracts are located upstream of Aswan in the Sudan.

The Aswan High Dam is located upstream of the original dam. Construction began in January 1960 and was completed in July 1970. The high dam created Lake Nasser, the largest artificial lake in the world. It extends for 350 miles (560 kilometers) southward to the Third Cataract and averages 6 miles (10 kilometers) wide. The high dam makes possible the large-scale storage and use of Nile water independent of natural floods, and it provides Egypt with low-cost hydroelectric power.

Between Aswan and Cairo the Nile Valley widens into a plain ranging in width from 6 to 9 miles (10 to 15 kilometers). The delta of the Nile begins near Cairo, where the river separates into the Damietta branch on the west and the Rosetta on the east. The delta, which contains about 8,500 square miles (22,000 square kilometers), has numerous small waterways and canals. At its northern edge several large shallow lakes have formed as the delta continues to expand into the Mediterranean. The largest of these is El Manzala, which is between Damietta and Port Said.
West of the Nile the Western Desert is one of the world’s driest areas. It is a low-lying plateau that gradually rises from a narrow coastal plain to an elevation of more than 3,300 feet (1,000 meters) in the southwest. In the Libyan Desert large areas are covered by shifting sand dunes. Several large depressions have been hollowed out of the limestone and sandstone by wind erosion. The oases of Bahariya, Dakhla, Farafra, and Siwa and the great oasis of Kharga have underground water supplies that support permanent agriculture. A branch of the Nile, the Bahr Yusef, flows through a gap in the Nile’s western cliffs to water the town of El Faiyum. In Wadi Natrun northwest of Cairo and the Qattara Depression, the water is salty. Located near Siwa on the edge of the Libyan Plateau, the Qattara is 437 feet (133 meters) below sea level.

The area between the Nile River and the Red Sea is the Arabian, or Eastern, Desert. It is a rugged, heavily dissected plateau with elevations of more than 3,300 feet (1,000 meters). Along the Red Sea coast, Jebel, or Mount, Shayib is 7,178 feet (2,188 meters) above sealevel. The highest point in Egypt is in the Musa Mountains of southern Sinai, where Jebel Katherina reaches 8,655 feet (2,638 meters). In the north is the Sinai Desert, which extends to the coast between the Suez Canal and Israel.

Egypt has an arid climate. Alexandria has the highest rainfall, with a mean of 7.4 inches (18.8 centimeters) annually. Other parts of the Mediterranean coast receive even less rainfall, with only 2.5 inches (6.4 centimeters) annually at Port Said. Most rain falls in the winter, none in the summer. The mean annual temperature is 69° F (20° C), reaching a high of 80° F (27° C) in the summer.

Cairo is a desert capital. It receives slightly less than 1 inch (2.5 centimeters) of rainfall annually, and the mean annual temperature is 71° F (22° C). In the spring and summer early morning fogs on the Nile Delta provide some additional moisture. The rest of Egypt has only a few centimeters of rainfall annually. Most of the yearis hot and dry, and periodic droughts extending over several years are common. Aswan, for example, has a mean annual rainfall of 0.2 inch (0.5 centimeter) and a temperature of 80° F (27° C) with a high of 94° F (34° C) in the summer.

During the spring, hot dry khamsin winds blow northward from the Sahara across Egypt to the Mediterranean coast. The khamsin, which often produces sandstorms, can last for several days, destroying crops. Egypt has no forests and only a few permanent grasslands for pasture. At best the deserts support sparse drought-resistant scrub vegetation.

People:-

Egypt’s population is about 59.5 million. The average annual rate of growth is 2.3 percent. In the delta and valley of the Nile, densities reach3,243 persons per square mile (1,252 per square kilometer). About 49 percent of the population live in cities. The majority of Egyptians live in rural agricultural villages, some of which have 20,000 or more people.
Egypt’s largest cities are Cairo, the capital, and Alexandria. Together they contain about two thirds of the urban population. Cairo and its suburbs occupy both banks of the Nile just south of the delta. It is the largest city in Africa. Greater Cairo was estimated to have 10 million people in the mid-1990s. Giza is its largest suburb. Alexandria, the chief seaport, had about 3 million. Fifteen other cities, most located in the delta and the valley of the Nile, had populations of 100,000 or more. The Suez Canal cities of Port Said, Ismailia, and Suez, which were abandoned during the 1967 war with Israel, have been rebuilt.

Large-scale migration from rural areas to cities, especially Cairo and Alexandria, has caused urban population growth at twice the average national rate. Both cities have severe housing shortages and lack basic services. Extensive urban redevelopment programs are under way,and new towns are planned near Damietta, Cairo, and Aswan. Land reclamation in the Nile and planned agricultural settlements in the Western Desert are designed to help relieve population pressures.

Most Egyptians are Hamitic Arabs. They are descendants of the Hamites of ancient Egypt and of the Arabs who migrated to Egypt after the Muslim conquests of the 7th century. The Nubians, who are related to the Berber tribes of North Africa, are located south of Aswan. They were resettled in new villages near Kom Ombo when Lake Nasser flooded their homeland. A few Europeans, primarily Armenians and Greeks, live in cities. Most are in Alexandria.

About 86 percent of the Egyptians, including Nubians, are Sunni Muslims. Islam is the state religion and the basis for Egyptian law. The largest minority is made up of members of the Coptic church, one of the oldest Christian churches. The Copts, who are also descended from the Hamites, number about 6 million, or 13.5 percent of the total population. Egypt also has about 250,000 other Christians, and a small Jewish community remains in Cairo.

Arabic is the official language. Although it is spoken by all Egyptians, there are many dialects. Classical Arabic is used in printed materials and in the schools. Through radio and television the government is attempting to develop a vernacular Arabic as the common language. Educated Egyptians use English and French assecond languages. French-language publications have wide circulation in Cairo and Alexandria. The Coptic language, related to ancient Egyptian, is used only in church services. The Nubian dialect, while still spoken, is no longer written.

Operation of the Economy:-

Major segments of Egypt’s economy are controlled by the government. Most commercial and industrial companies are either state-owned or are run under government supervision. Only agricultural land and urban real estate are relatively free of government control. President Gamal Abdel Nasser instituted a centrally planned socialist economy. His successor, Anwar el-Sadat, encouraged foreign investment and private enterprise. Increased aid came from petroleum-rich Arab states, primarily the Gulf Organization for the Development of Egypt.

After the 1979 peace treaty with Israel, most Arab countries withdrew economic and political support from Egypt. President Hosni Mubarak reestablished ties with Arab countries and instituted policies to increase exports, particularly of petroleum, and private investment.

Egypt’s gross domestic product (GDP) grew at an average annual rate of 3 percent in the early 1990s. Agriculture contributed 17 percent, mining 10 percent, and manufacturing, wholesale and retail trade, and services 12 to 13 percent each. Because of limited opportunities in Egypt, many professionals and skilled workers took jobs in other Arab countries, primarily the Gulf States and Libya.

Agriculture and Industry:-

Agriculture in Egypt depends almost entirely on irrigation from the Nile. Barrages and dams on the Nile, especially the Aswan High Dam, allow water to be stored for use when the river level is low. Canals distribute it where it is needed throughout the year. Under perennial irrigation, a field may yield several crops each year. Cotton, rice, corn (maize), and sorghum are grown in summer. Barley, wheat, and beans are winter crops. Citrus fruits and vegetables are grown on the Mediterranean coast. Although enough fruits and vegetables are grown for the Egyptian people, only 38 percent of the demand for wheat is met. Egypt imports about half of its food supplies, primarily wheat and flour.
Three quarters of Egypt’s agricultural income is from cotton and rice. Cotton and cotton products account for 23 percent of its export trade. Egypt produces about one third of the world’s long-staple cotton. The area planted in cotton, however, has declined by half since 1968, and exports have been limited. Rice, fruits, and vegetables are also export crops. Sugarcane is grown to produce sugar for Egypt. Most cattle are used as draft animals, and sheep and goats are raised for wool and hair. Despite recent attempts to improve livestock husbandry, Egypt is a net importer of meat.

Egypt faces growing food shortages. Rapid population growth, rapid urbanization, and an increased production of commercial export cropshave intensified the pressure on a limited supply of agricultural land. Farms are limited to a maximum of 50 feddans, or 52 acres (21 hectares). Cooperatives aid farmers by renting implements and distributing seeds, fertilizers, and pesticides. Programs to increase the cultivated area through land reclamation, however, have not had significant results. The Aswan High Dam’s potential to add 30 percent to the cultivated area has not been realized. In fact, large areas have gone out of cultivation because of poor drainage and salinization, urban expansion, and industrial growth—especially in the Nile Delta. The government has plans to reclaim 3 million acres (1.2 million hectares). The largest projects are at West Nuberiya, which is near Alexandria, and in the northern Tahriv region. Projects are also planned for the “new territories” in the oases of the Western Desert.

Textiles and food processing are the most important industries. Textiles, primarily cotton, account for one third of the total output. Food processing, including the refining of sugarcane and preparation of fruits, is the second largest industry. Iron and steel plants are located at Helwan and El Dikheila, near Alexandria. An aluminum plant at Nag Hammadi processes imported bauxite. Cement is produced for the construction industry, but Egypt imports half of the cement used. Ten newcement plants are under construction. Fertilizer plants that use Egyptian natural gas are located at Takla and El Dikheila, and plants are planned or under construction at Alexandria, Mansura, and Asyut.

Energy and Natural Resources:-

Egypt depends on fossil fuels and hydroelectric power for its energy supplies. In the mid-1990s petroleum supplied the majority of the energy and hydroelectric power, 25 percent. Other renewable resources—such as crop residues, animal wastes, and wood—supplied 14 percent of the total energy consumed. Industry used 48 percent of the energy; residential, commercial, and municipal, 32 percent; and transportation, 14 percent. Only 6 percent was for agriculture and irrigation.

Egypt has the capacity to generate 5,610 million kilowatt hours. Two thirds is generated by hydroelectric plants, most at the Aswan High Dam. Power plants that burn petroleum produce most of the rest. These facilities are near Cairo and Alexandria and on the Nile Delta. High-voltage transmission lines link the Aswan hydroelectric plants with Cairo.

Industrialization and a national program of rural electrification have demanded additional generating capacity. A large coal-burning power plant near Cairo supplies three quarters of the city’s electricity. Eight nuclear reactors, which will generate 8,000 megawatts, are also planned. The first two units were being built at El Dabaa, about 100 miles (160 kilometers) west of Alexandria. Plans to generate hydroelectricity by flooding the Qattara Depression with water from the Mediterranean are also under way.

Crude oil provided about 50 percent of Egypt’s export revenues in the early 1990s, helping the nation to remain financially independent of its Arab neighbors. Petroleum exports have increased since 1976, with crude oil production reaching 910,000 barrels per day in 1993. The main fields are in the southern Gulf of Suez and adjacent coastal areas of the Arabian Desert and the Sinai. The offshore fields of El Morgan, Ramadan, July, October, and Belayim accounted for about 90 percent of the total crude oil production. In the Western Desert are the major fields of El ‘Alamein, Razzak, and Abu Gharadiq. Large new reserves were found as the Egyptian government encouraged exploration and made concessions.

Egypt has six petroleum refineries with a total capacity of 369,000 barrels per day. Two are located near Alexandria (47 percent of the total), two are at Suez, and the others are at Tanta and Mostarud near Cairo. They are linked by pipeline to the main producing fields. The largest and most important is the Suez-Mediterranean (Sumed) pipeline, which extends from Ain Sukhna on the Gulf of Suez to Sidi Krer west of Alexandria. It is being expanded. A new refinery planned for Asyut will be linked by pipeline to the Ras Gharib and Ras Shuqair fields in the Arabian Desert.

Natural gas is produced from five fields. Located at the edge of the delta, the Abu Madi field supplies gas to Tanta and Abu Qir, to Alexandria. Cairo (Helwan) is supplied by Abu Gharadiq, which is 124 miles (200 kilometers) to the west. In addition, two offshore fields provide a quarter of total production. Egypt uses all of the natural gas it produces, and demand is growing rapidly.

Manganese, phosphates, iron ore, and coal are in the western Sinai. Iron ore is also mined near Aswan, and large deposits have been found in Bahariya. Phosphates are mined in the Nile Valley and near Safaga in the Arabian Desert. Chromium, lead, asbestos, gypsum, granite, and talc are also mined. Limestone comes from the cliffs along the Nile.

Transportation, Communication, and Education:-

Water transportation is of primary importance in Egypt. It has about 1,925 miles (3,100 kilometers) of navigable waterways, half on the Nile and the other half on canals, mostly in the delta. The main canals are the Nubariya on the delta and the Bahr el Yusef, which links El Faiyum with Asyut on the Nile.

The Suez Canal is an international shipping link between the Mediterranean Sea and the Red Sea. The canal extends 121 miles (195 kilometers) from Port Said to Suez, on the Gulf of Suez. It has a 624-foot (190-meter) channel and a maximum draft of 54 feet (16.5 meters). Since 1975 the canal has been expanded to accommodate supertankers. Alexandria, Port Said, and Suez are Egypt’s major ports. Alexandria’s port is being expanded, and new ports are planned or are under construction at Dakheila, Damietta, and Safaga.

Egypt has 5,517 miles (8,487 kilometers) of railways. From Cairo lines extend along the Nile to Aswan, across the north coast to Salum, and to Alexandria, Port Said,and Suez. A railroad parallels the west bank of the Suez Canal between Suez and Ismailia. A railway also connects the iron ore mines at Bahariya with Helwan. A 26-mile (42-kilometer) subway transit system for Cairo began operation in 1988.

Egypt also has about 28,000 miles (45,000 kilometers) of roads, of which about 19,000 miles (30,600 kilometers) are paved. The 1-mile (1.6-kilometer) Ahmad Hamdi tunnel under the Suez Canal opened in 1980. Egyptair operates a full schedule of domestic and international flights. Service to Tel Aviv began in March 1980. The Nuzbah International Airport near Cairo opened in 1983.

Cairo is the major publishing center in the Middle East. It has four major publishing companies. Al Ahram, which was founded in 1875, is the most authoritative dailynewspaper.

Cairo is also a center for radio and television. Egyptian radio and television broadcast in several African and Asian languages. Egyptians have 16 million radios—more per capita than any other Middle Eastern or North African country—and nearly 5 million television sets.

Illiteracy is one of Egypt’s most severe problems. Although elementary schooling is compulsory, an estimated 50 percent of the population is illiterate.

Secondary-school graduates may take examinations for entrance to universities, or they may attend technical institutes specializing in agriculture, commerce, and industry. Egypt has 13 independent universities. The six major state universities are coeducational. The largest of these is the University of Cairo at Giza, founded as the Egyptian University in 1908. Universities were opened at Alexandria in 1942 and at Asyut in 1957. Ain Shams University, incorporating several other schools near Cairo, was established in 1950. There are also state universities at Helwan, Mansura, and Tanta.

One of the world’s oldest centers of Islamic education is El Azhar University in Cairo. Shortly after El Azhar Mosque was built in 972, it had one of the leading academies in the Muslim world. Since 1961 it has also provided secular education. The American University in Cairo was founded in 1919, and the Suez Canal University was established in Ismailia in 1976.

Government:-

The Arab Republic of Egypt is governed under the 1971 constitution. Islam is the state religion, and Islamic jurisprudence is the basis of Egyptian law. Arabic is the official language. The constitution provides for a strong presidency and a unicameral, or one-house, legislature—the People’s Assembly. About half of the members of the assembly must be farmers and workers. Members are elected for five-year terms by direct universal suffrage. The president has extensive executive powers. He is nominated by at least one third of the members of the People’s Assembly, approved by at least two thirds of them, and elected by popular referendum.

From 1962 to 1977 the Arab Socialist Union was the only legal political organization in Egypt. Political parties had been abolished in 1953. In 1976, however, groups within the union were allowed to support candidates. Political parties were legalized in 1977. The National Democratic party replaced the Arab Socialist party as the majority, and the Socialist Labor party formed the official opposition.

In 1979 the People’s Assembly was expanded from 350 to 392 members, ten of whom the president appointed. In the 1984 elections new laws required parties to receive at least 8 percent of the vote in order to be represented, and the number of seats was increased. In 1990 elections the principal electoral change was to move to voting for individual candidates rather than party lists. The Assembly has 444 members chosen from 222 constituencies and 10 members appointed by the president.

The National Democratic party continued to dominate Egyptian politics. Its strongest opposition since Egypt became a republic came from the New Wafd party. The other independent parties were forced to form a coalition in order to gain more than 8 percent of the vote.

History:-

After the death of the prophet Muhammad in 632, Arabs conquered Egypt in 639 to 641. Most Egyptians, who were Christians, converted to Islam. Those who resisted despite persecution were called Copts, from an Arabic word meaning “Egyptian.” Arabic replaced the Egyptian language, which was restricted to use in the Coptic church. In 973 Cairo was founded, replacing the old capital of Al Fustat. Egypt became part of the Ottoman Empire in 1517. Napoleon I invaded Egypt in 1798, defeating the Turks in the battle of the Pyramids, but his fleet was destroyed by Britain’s Admiral Horatio Nelson. The British left Egypt by 1803. Mehemet Ali, an Albanian officer in the Ottoman forces, became pasha, or governor, of Egypt in 1805. He defeated the British at Alexandria in 1807 and conquered most of the northern Sudan between 1820 and 1822. In 1856 Sa’id Pasha, Mehemet Ali’s son, granted Ferdinand de Lesseps the right to build the Suez Canal.It was opened in 1869 during the reign of Ismail Pasha. To repay his debts to British and French bankers, Ismail Pasha sold Egypt’s shares of Suez stock to Britain, giving it control of the canal. In 1876, again in debt, he allowed British and French officials strict control of Egypt’s finances. In 1882 British forces occupied Egypt to support the monarchy in the face of a growing nationalist movement. In 1899 the Anglo-Egyptian Sudan was established under joint British and Egyptian rule.

In World War I Turkey sided with Germany, but Egypt supported the British. Britain proclaimed Egypt a protectorate in November 1914 and assumed responsibility fordefending the Suez Canal. The Wafd, or nationalist, movement gained strength in wartime. After failing to reach a settlement with the Wafd, Britain abolished the protectorate and recognized Egyptian independence on Feb. 28, 1922. Britain retained responsibility for the security of the Suez Canal and the defense of Egypt.

In 1923 a constitutional monarchy was established with Sultan Fuad as king. He was succeeded in 1936 by his son Farouk. A treaty that year ended the British occupation of Egypt but confirmed its control of the canal zone and joint rule of the Sudan. When the British left Palestine in 1948, Egypt and its Arab allies invaded the area proclaimed as the state of Israel. Although defeated, Egypt kept the Gaza Strip.

Farouk was overthrown by a military junta on July 23, 1952. The Revolutionary Command Council, which was led by Major General Mohammed Naguib and Colonel Gamal Abdel Nasser, controlled the government. The constitution was abolished, and political parties were dissolved. Egypt was declared a republic on June 18, 1953, and Nasser became prime minister. An Anglo-Egyptian agreement in the same year ended the union of Egypt and the Sudan, resulting in independence for Sudan.

After a new Egyptian constitution was approved in June 1956, Nasser was elected president. The British forces left Egypt in July. Nasser declared the internationally owned Suez Canal Egyptian property. The United States and Britain had withdrawn financial aid for the Aswan High Dam, and Nasser planned to use revenues from the canal to finance Egypt’s share of the project. Israel invaded Sinai in October, and British and French forces landed in the canal zone in November. Nasser sank some 40 ships in the canal to block it. United Nations (UN) pressure brought a cease-fire and withdrawal of forces, and the canal reopened in March 1957 under Egyptian control, with guarantees of international use.

Egypt and Syria merged as the United Arab Republic in 1958 and, with Yemen, formed the United Arab States. Syria withdrew from the union in 1961 after a military coup, and Egypt ousted Yemen. A 1963 agreement between Egypt, Syria, and Iraq to form another United Arab Republic failed, though steps were taken in 1965 to join Egypt and Iraq.

Because of tensions between Israel and Syria, Nasser forced UN troops to withdraw from Egypt and blockaded the Gulf of Aqaba against Israeli shipping. Israel attacked on June 5, 1967, defeating the allied Arab forces in a six-day war and occupying the Gaza Strip and the Sinai. The Suez Canal was again blocked by damaged ships. A UN-negotiated cease-fire failed to result in a peace settlement. After the war Egypt faced severe financial crises and widespread discontent among students and workers. As efforts to reach a settlement continued through 1970, Egyptian and Israeli forces dueled across the canal.

Nasser died in September 1970 and was succeeded by Anwar el-Sadat (see Sadat). In April 1971 Egypt, Libya, and Syria agreed to  form the Confederation of Arab Republics. Full union was prevented by worsening relations between Egypt and Libya. On Oct. 6, 1973, Egypt and Syria launched surprise coordinated attacks on Israeli-held Arab lands. A UN-sponsored cease-fire took effect, and in January 1974 Egypt and Israel signed a disengagement agreement that returned to Egypt a strip of land east of the Suez Canal. The canal was reopened in 1975.

Egypt reestablished diplomatic relations with the United States after the 1973 war with Israel. In 1976 Sadat canceled a 1971 mutual friendship treaty with the Soviet Union. In 1977 he became the first Arab head of state to visit Israel. As a result of the 1979 Camp David agreements, moderated by United States President Jimmy Carter, Egypt and Israel signed a peace treaty that provided for a phased withdrawal of Israeli forces from the Sinai. As Palestinian autonomy talks continued, the twocountries established diplomatic relations, and Egypt took control of parts of the Sinai. Egypt was suspended from the Arab League, which it had once dominated, and most member countries withdrew economic aid from Egypt.

Sadat was assassinated by Muslim extremists in October 1981. Vice-President Hosni Mubarak became president . In October 1984 Egypt withdrew from its 1971 confederation with Syria and Libya. Despite economic difficulties, Mubarak remained in control of the government after the 1984 legislative elections. A five-day mutiny in Cairo by security police in 1986 raised questions about his ability to cope with forces that were steadily eroding the nation’s stability.

In October 1987 Mubarak began a second six-year term after receiving 97 percent of the vote in a popular referendum. As a result of his moderate policies Egypt gradually improved its relationships with other Arab states, and many members of the Arab League reestablished diplomatic relations with Egypt. In 1989, Egypt rejoined the Arab League, and Mubarak was elected chairman of the Organization of African Unity. Egypt was thrust onto center stage in 1990 by the Iraqi invasion of Kuwait, first through Mubarak’s attempts to bring about an Arab diplomatic solution and later by the deployment of Egyptian troops and tanks as part of a multinational force in defense of Saudi Arabia.

Mubarak won reelection to the presidency in 1993 and survived an assassination attempt by Muslim extremists in June 1995. In the mid-1990s, militant Egyptian Muslim groups launched a campaign of terrorism against the government, secular intellectuals, and foreign tourists.

At least 60 people were killed and some 25 more were injured on Nov. 17, 1997, when six members of the Egypt-based Islamic Group (al-Gamaa al-Islamiyya) opened fire on a crowd of tourists in Luxor, Egypt. The attack was called the worst incident of terrorism in the history of modern Egypt.Following the assault at the temple, members of the Islamic Group released a statement in which they claimed responsibility for the attack.

Hosni Mubarak, the president of Egypt, expressed outrage over the most recent episode of violence in his country. Mubarak accused the terrorists of being “murderers and criminals who do not belong to Islam or any other religion . . .” Mubarak also condemned Egyptian security organizations for having deployed too few police officers at the well-traveled tourist spot. Mubarak vowed that he would increase security throughout the country in an effort to bring a halt to the acts of terrorismby Islamic extremist insurgents that had claimed more than 1,150 lives between 1992 and 1997.

Soil

Introduction:-

One of the most important natural resources is soil. Like air and water, soil is necessary to life on Earth. Without it, plants could not grow and plant-eating animals could not live; meat-eating animals would also perish. Civilizations depend on the quality of their soil to grow their food and to serve as a living filter that purifies the wastes they produce.

Only a thin layer of soil, called topsoil, can adequately support plant life. While along great rivers the soil favorable to plant growth may be hundreds of feet thick, in most places it extends down only about six inches. People must protect the fertility of this thin layer by preventing erosion and by replacing the food values that crops remove from the soil. Erosion can strip soil from unprotected land. The replacement of such losses is very slow. Nature takes from 500 to 1,000 years to make 1 inch (2.5 centimeters) of topsoil and from 2,000 to 5,000 years to replace a loss of 5 to 10 inches (13 to 25 centimeters). Therefore nations must learn to conserve their productive soil.

How Soil Is Formed:-

Soils are developed from mineral and organic matter and generally contain an active population of organisms. Unlike solid rock, soils are full of pores and channels that serve to conduct air and water. Each type of soil expresses characteristics of the parent material from which it developed and reflects changes imposed by its surrounding environment.

Five major influences on soil formation include the nature of the original parent material, weathering, climate, land surface features, and the action of plants and animals. These factors determine the physical and chemical properties of various kinds of soil.

Parent material is the basic mineral and organic material from which the soil is formed. There are three kinds of parent material: transported, residual, and organic. Transported material is by far the largest category; it is carried by wind, water, or glaciers from one site to another. Among the wind-transported materials are loessial deposits (composed of packed layers of fine, powdery soil), which give rise to many of the productive prairie soils and to dune soils formed by blowing sands in desert and coastal regions. Alluvial materials are deposited by rivers and provide rich productive deltas, floodplains, and terraces. Lacustrine deposits, formed in lakes, were later exposed by receding glaciers. Marine deposits occur along the margins of most oceans and gulfs. During the last Ice Age, huge continental ice sheets moved across much of Northern Europe, Asia, and North America. Their enormous weight crushed and transported material that later served as parent material for soil.

The residual parent material from which soil is formed is loose, slightly weathered rock called regolith. Residual formations settle in layers that range from fully weathered material at the top to unchanged parent material at the bottom. Organic parent material occurs when organic deposits accumulate in wet or cool regions. This material eventually develops into peat, or bog soil.

Temperature and precipitation are the main weathering and climatic factors that affect soil development. In arid regions where water is generally unavailable as a weathering force, temperature changes from day to night cause rocks to expand and contract, eventually cracking them into smaller and smaller particles. With little or no water to leach out minerals, the soils in arid regions are neutral or alkaline and have an accumulation of soluble salts. In areas of high precipitation, minerals are leached out of the soil at a rapid rate, rendering most tropical and semitropical soils highly acidic.

The greater the weathering processes at work, the finer the particles of soil that result. These particles range from gravel to sand, silty material, and, finally, clay. Clayformation is more rapid under conditions that favor weathering and leaching of minerals. Under extreme conditions, soluble elements such as potassium, nitrogen, calcium, and magnesium are removed, and the clay changes to koalinite and other highly oxidized clays.

Land surface features affect soil development by controlling the amount of erosion of topsoil and by influencing how water drains into the soil. The greater the slope in surface features, the longer soil takes to develop because steep slopes are more exposed to erosion that removes soil as it forms. On the other hand, depressions in the land that result in poor drainage and lack of adequate oxygen retard plant growth.

Plants and animals also help develop soil. When plants die, water leaches plant food from them and carries it down into the pore spaces. This organic matter, or humus, helps the soil to stay porous and crumbly. Plant roots help water to drain or percolate into the soil. In dry times capillary action draws water up the channels made by the roots, bringing with it material that has leached down. Plant rootlets can split rocks by exerting pressure after working into cracks and crevasses.

Soil is enriched by the wastes and decayed bodies of animals. Some animals—ants and earthworms, for example—help by mixing the soil. Many insects directly enrich the soil by fertilizing flowers, thus aiding the spread of plant life.


Composition of Soil:-

Soils are composed of mineral matter and organic matter and contain pore spaces filled with water or air and soluble nutrients. Organic matter serves as a binder for mineral particles, contributing to good soil structure and tilth, which refers to the behavior of soil under cultivation.

The organic matter content of mineral surface soils ranges from less than 0.5 percent in highly weathered, sandy soils to more than 6 percent in poorly drained prairie soils. Soil organic matter undergoes continual breakdown from fresh plant residue to relatively stable humus. Initially plant residues are attacked by soil animals such as insects or worms. As breakdown proceeds, soil microorganisms begin their work. Carbon is changed to carbon dioxide, and complex nitrogen compounds are transformed to soluble forms that plants can use. Humus is also an important storehouse of phosphorus and sulfur.

Soil water and gases fill the spaces between mineral and organic matter. A total pore space that is 50 percent air and 50 percent water offers an ideal growth medium for most plants. The amount of space that is filled with water and the extent to which the water is held within the soil depend on the degree of saturation. As the soil dries, water is held more tightly in thin films that coat the particles of soil, and this water is not available for use by plants.

Minerals and nutrients that have been dissolved in the soil water contribute to the soil solution that is the nutrient lifeline for plants. Plants get food not from solid particles but from water in which food elements are dissolved. As plants take these nutrients out of the soil solution, many are replaced by the continual release of minerals from the breakdown of parent material. The type and amount of minerals in the soil and the rate at which they dissolve into water help determine the fertility of the soil.

Soil air occupies all the pore spaces in soil that are not filled with water. This air contains several hundred times as much carbon dioxide as the atmosphere and has nearly 100 percent relative humidity. The exchange of atmospheric and soil air is reduced in soils that have a high water content (as in poorly drained soil) or thathave a reduced pore space (as in finely textured clays).

The color, texture, and structure of different soils can reveal clues about soil development and the presence of soil water. Color, the most easily observed property, can be used to identify chemical characteristics of soil that are otherwise difficult to determine. The most common colors are combinations of red, yellow, black, brown, and gray; each color indicates different soil characteristics.

Soil colors:-

Colors of organic matter range from the brown of undecomposed peat to the rich black of humus. Black colors are generally found in the surface layer of soil. When located deeper, the dark colors may represent soil buried by sedimentation or a geologic deposit.

Red colors in soil, caused by the presence of iron oxide, are typically found in temperate region soils. Good drainage and warm temperatures encourage the formation of iron oxides. The process may require long periods of weathering and is characteristic of older soils. Brown and reddish brown represent a combination of organic matter and oxidized iron.

Yellow colors are the result of oxidized iron with attached water molecules, indicating that yellow soils are slightly wetter than red soils. When iron is completely isolated from oxygen, as it would be in a saturated soil, the soil color turns bluish gray. As rainfall fluctuates with the seasons, small pockets of varying colors called mottles are formed in the soil.

Gray and white colors may reveal the sandy parent material or may indicate the removal of iron and organic matter from soil minerals through leaching. In arid regions, such as deserts and coastal areas, white indicates soluble salts or carbonate accumulation in the soil.

Soil texture refers to the coarseness or fineness of mineral particles in the soil, while soil structure describes the physical arrangement of these particles. Texture and structure are important properties that help determine a soil’s ability to supply water and nutrients to plants.

Soil particles:-

Sand, silt, and clay, which comprise the soil particles that are less than 8/100 inch (2 millimeters) in diameter, are often referred to as soil separates. Stone, gravel, cobbles, and boulders may be part of a field soil, but, because they are larger than 2 millimeters, they are not included in the analysis of soil texture. Sand particles range from 2/1,000 to 8/100 inch (0.05 to 2 millimeters) and are gritty to the touch. Silt is as smooth as flour when dry and holds water well; these particles are smaller than sand but larger than clay. Clay particles are less than 8/100,000 inch (0.002 millimeter) in diameter and are the soil separates most involved in chemical reactions in the soil. Clay particles have 10,000 or more times the surface area of the same weight of sand. Since water, nutrients, and organic matter are all held onsurfaces, soils low in clay cannot support much plant growth. Too much clay, however, can make the soil sticky, plastic, and slow to take in water or air.

Texture and structure:-

Three broad textural classes—clays, sands, and loams—are used to describe soils. Clay soils are finely textured and are often referred to by farmers as heavy soils,meaning it is difficult to pull a plow through them. A clay soil must contain at least 35 to 40 percent clay-sized particles. Sandy and silty clays are included in this textural class. Sands are coarse-textured soils that may also include loamy sands containing some clay and silt. Loams represent roughly even mixtures of sand, silt, and clay. Loams can be further classified as sandy, silty, or claylike, depending on the element that most influences the properties of the soil. Most of the world’s prime agricultural soils are loam.

Soil separates and organic matter are often found together in natural soil structures called soil peds, or aggregates. Cycles of wetting and drying and freezing and thawing promote ped formation. For this reason farmers often leave their fields exposed in winter to mellow the soil. A well-developed soil structure can provide largepores and cracks that enhance water and air movement and root growth.

Soil structure is classified by the shape and size of soil peds. Granular structure is common under sod and refers to small balls of soil that easily separate. Blocky structure is common in older clay soil in humid regions. Well-developed prisms and columns can be found in some clayey subsoils.

Chemistry:-

The basic chemistry of soil includes colloidal structures, minerals, and macronutrients and micronutrients essential to plant life. Clay and organic matter are finely divided soil particles called colloids, which provide the site for most of the chemical reactions in soils. Colloids, though small, possess large surface areas and electrical charges that attract nutrients and water. Soil colloids bind nutrients and prevent them from being leached out of the soil.

Clay minerals are silicates arranged in microscopic sheets of aluminum and silica. The specific arrangement of these sheets and the type of elements within them determine the clay type. Many of these clays possess negative electrical charges that help retain elements such as potassium, calcium, and magnesium for plant use. These nutrients can move into the soil solution and be absorbed by plant roots.

Essential plant elements are those required for plant survival and growth. Three of these elements—carbon, oxygen, and hydrogen—are supplied by water and air, while 14 others, categorized as either macro- or micronutrients, must be supplied by the soil. Macronutrients include nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur. Nitrogen, phosphorus, and potassium, known as primary elements, are commonly supplied in fertilizers. The other three are secondary elements and are added to the soil in the form of lime or, in the case of sulfur, as by-products of phosphorus fertilizers.

Nutrients:-

Micronutrients are also known as trace elements because plants need them in such small quantities. These elements include iron, manganese, copper, zinc, boron, chlorine, cobalt, and molybdenum. The availability of micronutrients is determined by how acidic or alkaline the soil is.

Plant nutrients such as nitrogen and sulfur exist mostly as negatively charged ions in the soil and therefore are not held by soil colloids. As a result, these elements aresubject to leaching by water moving through the soil, especially in sandy soils. Leaching of nitrogen into the groundwater is a serious environmental problem in sandy irrigated regions.

Soil water:-

Prime agricultural soils can store as much as 12 inches (30 centimeters) of available water, which is a great advantage in times of drought. Water is held in the soil by cohesion to other water molecules and by adhesion to colloid surfaces. Soils with smaller pores are more effective at holding water against the forces of gravity. Large pores are best at conducting water through the soil when water content is high.

When the ground is saturated, all the pores in a soil are filled with water. After about two days, water drains from the large pores, and the soil is in a condition known as field capacity. This is the maximum amount of water a soil can hold against the forces of gravity. Some water is held so tightly by adhesion that plants cannot pull it away. When plants cannot remove any more water from the soil, the field has reached what is called the wilting point. The amount of water between field capacity and the wilting point indicates the amount that is available to plants.

Soil Classification:-

Soils are classified on the basis of soil depth, color, texture, structure, chemical composition, and the presence of certain diagnostic horizons. Diagnostic horizons are based on combinations of thickness, color, chemistry, or texture. Soils are classified by soil series names that indicate the location where the soil was first described and the surface soil texture. For example, Norfolk loamy sand identifies a soil first classified near Norfolk, Va., as sand with loam properties. Soil orders are subgroups of soils.

Several soil orders have been identified. Entisols are soils in recent geologic deposits that have little or no horizon development. Material in which soil development is just beginning is known as Inceptisol. Aridisols are found in desert regions and are characterized by light color, low organic matter, and accumulations of carbonates, gypsum, and salts. Vertisols are clay soils that develop cracks in the dry season, which allow surface material to fall in, inverting the normal layers of soil. Dark-colored prairie soils with thick topsoils are known as Mollisols; these are among the most productive agricultural soils in the world.

Alfisols are slightly more moist and acidic than Mollisols and border the wetter regions of grasslands. Ultisols exhibit clay accumulations in the subsoil and are named according to the weathering they undergo. These soils develop in warm regions with heavy rainfall. Highly oxidized soils of the humid tropics are called Oxisols; most minerals have been leached from these soils, leaving primarily iron and aluminum oxides. When limed and fertilized, however, these soils can be made extremely fertile. Histosols, or organic soils, contain at least 20 percent organic matter and can be productive for certain kinds of crops. The soils of the Florida Everglades are largely Histosols.

Soil Management and Research:-

The study of soil is carried out by several types of scientists. Pedologists study the soil as a natural body without necessarily focusing on its use. Soil chemists, physicists, mineralogists, and microbiologists conduct research on soil properties and behavior. Edaphologists study the soil as a medium for the production of crops.

Soil scientists attempt to find ways of managing the soil so that it will provide maximum crop yields without depleting this valuable resource. They recognize that the soil—as a living, dynamic medium—has many vital uses.

Soil scientists are also concerned with finding ways to minimize or prevent soil erosion and to increase the buildup of organic matter in soil. Research in farming methods has resulted in new ways to use contour plowing, terraced farming, rotation of crops, fertilization, and ground-cover plants to protect and enrich the soil in many parts of the world. The study of soils—their fertility and their capacity to filter waste products—will become increasingly important as the world demand for food rises and levels of pollution increase. Protection of the thin layer of the Earth’s surface called soil is vital to survival.

Desert

Introduction:-

Any barren region that supports very little life may be called a desert. The cold expanses of Antarctica, extreme northern Asia, and Greenland are therefore true, but cold, deserts. Most commonly, however, the term desert is used for regions that are barren because they are arid, or dry. Arid deserts receive little precipitation and are characterized by specialized plants that tolerate drought conditions and salty soils, and by distinctive land features.

Most desert areas get less than 5 inches (13 centimeters) of rain in a year. The rainfall is not only scanty but also uncertain. Records at Iquique in northern Chile showed no rain for a period of four years. The fifth year brought 0.6 inches (1.5 centimeters), making a five-year average of 0.12 inches (0.3 centimeter). At another time 2.5 inches (6.4 centimeters) fell in a single shower.

Desert Climates:-

Temperatures range widely in deserts. The greatest daily fluctuations occur in deserts near the equator. Temperatures above 100° F (38° C) occur regularly in summer. Azizia, 25 miles (40 kilometers) southwest of Tripoli, in Libya, holds the record with 136.4° F (58° C), while Death Valley, Calif., comes close with 134° F (56.7° C).

Winters are cold in middle-latitude deserts, located far from the equator. At Luktchin in central Asia the average temperature in July is 90° F (32° C), while the Januaryaverage is 13° F (–10.6° C)—a range of 77 Fahrenheit degrees (42.6 Celsius degrees).

The temperature drops sharply in the desert night. Dry air, cloudless skies, and bare, dry earth furnish ideal conditions for the cooling of air after sunset. A 24-hour range of 25 to 45 Fahrenheit degrees (14 to 25 Celsius degrees) is common, and it may be as great as 60 to 70 Fahrenheit degrees (33 to 39 Celsius degrees).

In coastal fog deserts, such as the Namib of Africa, relative humidity may be high, ranging from 60 to 100 percent. In interior deserts, however, relative humidity tendsto be low, ranging from 5 to 15 percent. Such interior deserts are windy places. Travelers constantly struggle against wind and sand. The air is often dark with a fine dust that fills the eyes, nose, and throat. Cloudiness is rare, and the sunlight reflected from the sand is blinding. The hot, dry air evaporates moisture rapidly. In the Sonoran Desert, moisture evaporates as it rises from under the ground. A year’s evaporation can amount to 100 inches (250 centimeters). This is about 20 times theannual rainfall.

Land Forms of Desert Regions:-

Desert areas differ greatly in the appearance and nature of their surface features, which range from mountains to plateaus to plains. These diverse arid landscapes occupy about 11,500,000 square miles (29,800,000 square kilometers) of the continental masses of the Earth—about 20 percent of the surface area—and occur on all continents.

Although sand dunes are spectacular features of deserts, they are not as common or widespread as generally believed. In the deserts of the southwestern United States, for example, dunes occupy less than 1 percent of the surface. In the most sandy of all deserts, the Arabian, dunes occupy only about 30 percent of the total area. If sand accumulations on plains are extensive and appear as a “sand sea,” they are called ergs.

The more common type of desert consists of rugged mountains separated by basins called bolsons. The mountains receive most of the rains in downpours. As the water rushes down the steep slopes it cuts deep gullies and carries rock fragments, gravel, and sand to the bolson. These materials are freed from the water when it slows or evaporates, and they are deposited as alluvial fans or cones. The rugged forms produced in this way, such as the terrain in Death Valley, Calif., are termed badlands. Sometimes the floodwaters make a temporary shallow lake in the basin. The temporary lakes that form in basins with no outlet are called playa lakes.

There are two general playa types: clay pan or clay flat playas in valleys where the water table, or underground water, is relatively deep, and salt pan or saline playas where the water table is within 10 feet (3 meters) of the surface. Those portions of playas that contain water throughout the year or that are kept moist are called salinas. In narrow basins, alluvial fans and badlands may extend to the edge of the playa. In broad valleys there is a surface of low relief and gentle downward slope that occurs between the playa and other alluvial fans of the mountain front. Such a surface is called a desert flat, or llano.

Other deserts consist of rocky plateaus, called hammadas, separated by sand-filled basins, or ergs. Here differences in altitude are usually slight. Many hammadas are broad, almost flat, dome-shaped areas. Where streams or wind wear away the weaker rocks, strong rock formations stand out boldly as mesas or cuestas. Pinnacles, needles, and arches carved in colored rocks lend fantastic beauty to the deserts of the American Southwest. Gullies are cut deep into the hammadas by the wearing force of the torrents. Gullies are known as wadis in Arabia and arroyos in the Southwest.

Water and Drainage in the Desert:-

People can live and grow crops in the desert only at places where they can get water, called oases. In some spots ordinary shallow wells reach the water table, but usually groundwater lies at greater depths in deserts than in humid lands. In alluvial fans the water sinks deep into the porous material, but it may be reached by a well at the tip of the fan.

In the wadis, ordinary wells can usually tap a supply of good water. Oasis settlements therefore are most often found where wadis are numerous. Ergs into which manywadis drain may have a water supply. Desert shrubs in the hollows between the dunes signal its presence. Deep artesian wells may be bored where the rock structureholds water under pressure (see Water). In some oases an artesian spring flows through a crack in the rock.

Streams that rise in rainy regions outside deserts bring the most generous supply of water for irrigation. All the large deserts except those of Australia are crossed by these so-called exotic rivers. The largest and best known of them are the Nile in Egypt, the Tigris and Euphrates in Iraq, the Indus in Pakistan, and the Colorado in the United States.

Desert soils are usually productive when given water. They are coarse textured and highly mineralized. Most widely cultivated are the water-transported soils of floodplains and alluvial fans.

Plants and Animals of Arid Lands:-

Few parts of the desert are entirely barren. Where water seeps toward the surface, a great variety of plants spring up. After a rain low shrubs and grasses come to life. At blooming time, the plants are fragrant and bright with color. They grow quite far apart, instead of providing complete ground cover.

Desert plants differ in the ways they adapt themselves to arid places. Those that depend on the rain sprout when it falls, bloom quickly, ripen their seed in a few days, then wither and die.

Other plants depend upon underground water and have long root systems. Various adaptations of the leaves prevent loss of moisture through transpiration. Cactus leaves, for example, are reduced to spines.

Animals live in all but the most barren stretches. The camel is the most useful domestic desert animal. Its physical structure permits it to travel far without water. Various wild mammals, birds, and reptiles of arid regions must get all their moisture from their food.

World Distribution of Deserts

Most of the Earth’s deserts are strung along the Tropic of Cancer and the Tropic of Capricorn between 20° and 35° in both north and south latitudes. These low-latitude deserts lie mainly on the west coasts of continents, though deserts extend across North Africa and far into Asia and Australia. Deserts inside continents extend poleward. These are sometimes called middle-latitude deserts. Usually interior deserts are dry. This is because mountain ranges have caused the moisture from ocean winds to precipitate on their slopes.

The low-latitude deserts lie mainly in the path of the northeast and southeast trade winds or in the adjacent horse latitudes (see Wind). The air is descending (subsiding), and the weather tends to be warm and dry. There are few clouds and variable winds. When winds blow from the cold ocean to these warm lands, the air is heated. Clouds brought in by these winds shed little rain because moist air must be cooled to bring rainfall.

Ice cap and tundra regions around the poles are sometimes called cold deserts. They have little precipitation—usually less than 10 inches (25 centimeters)—but thedearth of vegetation is caused chiefly by the cold.

Land Use and Livelihood:-

The total human population of all desert regions is estimated at some 85 million, or less than eight to the square mile. The only densely settled spots are irrigated places such as the lower Nile River.

Land is precious in oases, so it is intensively cultivated. In North African and Asian oases, the chief food crops are dates, figs, wheat, barley, rice, and beans. Oasis farmers also raise such crops as cotton and sugarcane. In the United States irrigated lands are mainly used for citrus fruits, dates, winter vegetables, and cotton.

Proper development of critical water resources has recently focused on improving surface-water management techniques, improving control and storage of surface runoff, reducing loss from shallow aquifers, and desalting brackish waters. The buildup of salts in the soil has become a serious problem that is being studied in several nations. The introduction of cultivated plant species with greater salt tolerance, as has been done in Israel, seems to be a promising alternative to abandoning arid land.

Desert life is changing. Irrigated lands are being extended by giant river-control systems. Oases once reached only by camel now have airports and service stations for motor vehicles. Settlements have sprung up in deserts to obtain such valuable minerals as the petroleum of Saudi Arabia, Iraq, and Iran and the copper and othermetals of arid North and South America. Typical desert minerals are soluble salts left behind by evaporation. Sodium nitrate, the most valuable, comes from the north Chile desert .

Railroad

Operating Cars in Trains:-

Besides track and the locomotive there is a third basic element in railroading—cars in trains. In order to operate cars in trains, there must be some means of coupling and uncoupling the cars, absorbing the push and pull of cars working together, and applying and releasing brakes. Furthermore, cars owned by different railroad companies must be able to work together in trains.

Early inventors were busy making devices for quick, simple coupling of cars. In the United States, the simple link-and-pin coupler soon came into general use, but it was dangerous because a worker had to go between the cars to couple and uncouple them. In 1887 the link-and-pin coupler was largely replaced by the knuckle-type automatic coupler, developed by Maj. Eli Janney. The basic Janney design is still in use today, though in a much-refined form, and similar couplers are used in many other countries, including China and Russia. To absorb the push-pull shocks between cars as they run coupled together in trains, various forms of draft gear are installed between the couplers and underframes of the cars.

In Europe automatic couplers are not widely used. Instead, cars are usually coupled by means of a hand-operated turnbuckle and screw. European cars have projecting buffers that absorb the pushing shocks.

The problem of how to stop long trains quickly, smoothly, and safely was not solved until the invention of the straight air brake by George Westinghouse in 1869. A modification of his brake system, the automatic air brake, was made compulsory in the United States in 1893. The automatic air brake maintains constant air pressure throughout the train. To slow or stop the train the engineer opens the brake valve. This decreases the air pressure and applies the brakes on all the cars. The vacuum brake, used primarily in Great Britain, works in just the opposite way: increased air pressure causes all brakes to be applied.

Operating Many Trains at Once:-

To safely control the operation of trains moving in different directions and at different speeds, railroads have developed intricate systems of communications and signaling. Many early American railroads were operated on the basis of a timetable system. The table indicated when each train was due at each station and which classes of trains had the right of way over other classes. However, the timetable system could not account for extra trains or for delays due to equipment failure or other causes. Beginning in the 1850s, the timetable instructions were modified and supplemented by telegraphic train orders, which were sent from a central train dispatcher to wayside telegraph operators, who handed them to the train crews. This timetable–train order system, which seeks to keep trains separated by time intervals, is still in use on some light-traffic lines. However, the telephone has replaced the telegraph in transmitting train orders, and on many lines orders are sent by radio directly to trains.

Keeping trains separated by space intervals, or blocks, provides additional protection against collisions. A block may be any length from a few hundred yards to several miles. Originally, operators located at the boundaries of the blocks set signals to tell trains whether the block ahead was clear or occupied. The electric track circuit, invented by William Robinson in 1871, made possible the automatic block system, which is used today on most major lines.

The track circuit is one of the earliest examples of automation. In this system, the presence of a train in a block acts on an electric current in the rails to set up signalsat least two blocks ahead. These signals warn approaching trains. The warnings are indicated by the position of semaphores (which are now increasingly rare) or by the color or position of lights located on masts or bridges alongside or above the tracks. Thus, each train automatically operates its own warning signals and setsup its own zones of protection. Electronic enhancements of the automatic block system include cab signals, in which the wayside signals are repeated in the cab before the eyes of the locomotive engineer, and automatic train control, in which the brakes are automatically applied if the engineer should accidentally miss a stop signal. Some high-speed lines eliminate wayside signals altogether and use only cab signals.

Centralized Traffic Control, or CTC, is another system that is widely used on heavy-traffic American railroads. Under CTC each train automatically reports its position and movements by means of lights that appear on a track map in front of the train dispatcher or operator. With this information, the dispatcher can arrange and issueorders for train movements even hundreds of miles away simply by pushing buttons.

In the 1980s computers began handling most of the routine dispatching functions, thus permitting a single dispatcher or operator to oversee and direct much larger segments of a railroad. Several large American railroads began using highly centralized traffic control in which all traffic control activity, covering many thousands of line miles, is concentrated in one central office. Late in the decade, various railroads began testing advanced traffic control systems. Some of these systems use transponders in the track to determine train location and speed, while others use radio signals from satellites.

Railroad companies have always been eager to adopt better communications systems. They were among the early users of the telegraph, telephone, punch-card data processing machines, and computers. In the years after World War II, most trains were equipped with two-way radios so that crews could communicate with other trains, wayside operators, dispatchers, or supervisors. From the mid-20th century, high-capacity microwave radio systems were replacing lineside telephone wires. More recently, some railroads have begun using fiber-optic cables to accommodate the large flow of data to and from powerful computers. (See also Computer; Radio; Signaling.)

Classification, or Marshaling, Yards:-

The various systems for sending orders and information are most intensively used at large freight terminals. Here incoming trains are broken up and then reassembled into outbound trains headed for different destinations. These terminals are called classification, or marshaling, yards. Larger marshaling yards usuallyclassify or sort cars with the aid of gravity. Incoming trains first enter the arrival yard, where the locomotives are removed. Then switch engines push the cars up a small hill, or hump. At the top of the hump, each car or group of cars is uncoupled and allowed to roll down the hill into the bowl. The bowl may have as many as 50 parallel classification tracks, each assigned to cars headed for a particular city or terminal. As each car rolls toward the bowl, switches are thrown to direct it to the proper destination track.

To build an outbound train, a switch engine withdraws all the cars that have accumulated on particular bowl tracks and assembles them into new trains in the departure yard. Here a road locomotive is attached and, after the cars are checked and the brakes tested, the train departs.

The operation of most advanced marshaling yards is largely controlled by computers. Information about incoming trains is fed into the yard’s computer system, which produces a switch list that is then used by the person who uncouples the cars at the top of the hump. The computer also programs the switches so that each car is automatically directed to the proper bowl track. At smaller terminals, the process of classifying cars and building new trains is done by switch engines working in flat yards, without a hump, and having little or no electronic equipment.

In the 1980s, the use of classification yards began to diminish because of the pressure of competition from other forms of transportation and the changing character of railroad traffic. Intermodal trains, for example, carry cargo packed in truck trailers or marine containers. They operate to and from special intermodal yards, where the trailers and containers are transferred between the railcars and waiting trucks or ocean carriers. Such trains are not usually broken up and reclassified. Many trains that carry bulk commodities also travel directly from origin to destination.

Passenger and Freight Cars:-

Railroads may carry passengers or freight. The earliest railroad passenger cars were simply stagecoaches equipped with flanged wheels. Likewise, the first freight cars were merely converted wagons. Today, however, railroads operate a wide variety of cars designed for specific types of service.

Railroads offer two basic types of passenger service: commuter and intercity. Commuter service is provided for people who live in suburbs and work in nearby cities.Intercity trains usually run between two large cities, called end points, that are 100 miles (160 kilometers) or more apart. Some intercity trains may cross an entire continent on a route that passes through several countries. Some local trains stop at all or most of the stations between the end points, but most intercity trains stop only at the larger cities on the route.

Commuter trains have coaches designed to carry as many people as possible. Some commuter coaches have two levels of seats and can carry as many as 150 passengers. The coaches of intercity trains are more roomy; they seat about 50 or 60 people and have reclining seats for greater comfort on long trips. Many long-haul intercity trains also have sleeping cars, which have small rooms with fold-down beds for use on overnight runs, dining cars to provide passengers with full meals during the trip, and lounge cars to furnish refreshments and light meals.

Freight cars can be classified into three basic types: the boxcar, or house car; the open-top car; and the flatcar. Today railroads use many variations of these basic types along with many special cars designed to carry specific types of freight.

Boxcars are used to carry merchandise or other freight that must be protected from the weather. Some boxcars have cushioned draft gear to protect fragile shipments from damage during transport. Open-top cars are used mainly to carry minerals, such as coal or iron ore. Many have hopper doors that allow the cargo to be unloaded through the bottom of the car. Others are designed to be unloaded by turning the entire car upside down in a huge car-dumper machine. Flatcars—open cars with no side panels—can handle a wide variety of freight, including steel beams, packaged lumber, farm machinery, long poles, construction equipment, and other large, heavy materials.

To better serve shippers and to compete with highway trucking, railroads may run special types of cars. In the United States, the movement of highway trailers or marine containers on intermodal flatcars has become the fastest growing segment of the railroad business. Efficient double-stack trains carrying containers stackedone atop the other became widely used during the 1980s. Among other specialized cars are auto-rack cars, which carry up to 21 finished automobiles or small trucks; tank cars for hauling petroleum, liquid chemicals, and gases; covered hopper cars to carry grain or chemicals; and refrigerated boxcars, or reefers, to carry perishable produce. (See also Express; Postal Service.)

Railroad Organization and Regulation:-

In the United States a railroad is organized much like any other business—with stockholders, a board of directors, and a president. In most other countries the government, rather than individual stockholders, owns the company.

A typical large railroad in the United States is divided into three major departments—marketing and sales, operations, and executive. The marketing and sales department works with present and potential customers to determine what rail services they might use and what the prices, or rates, for those services should be. The operations department, in which the majority of railroad employees work, is responsible for producing the services needed to obtain the railroad’s business. The executive department performs a number of functions that include accounting and finance, legal matters, public relations, management information systems—that is, computer systems—and personnel.

Although different railroads often compete with each other, they may cooperate to meet the needs of passengers and shippers. For example, through trains that may transport passengers over two or more railroads are common in Europe, and in North America the freight cars of any railroad can operate on any other line. Of course, standardization of track gauge is vital for this kind of cooperation, but car components, particularly brakes and couplers, must also be compatible. To achieveand maintain this compatibility, railroads in North America work through the Association of American Railroads. The association sets the standards for cars that are to be interchanged among railroads. In Europe, the Union Internationale des Chemins de Fer (International Union of Railways) performs similar functions.

Most of the early railroads in the world were built as privately owned businesses operated for profit. However, they quickly became so powerful that governments began to regulate their activities. Railroads were required to get government permits in order to build new lines. Soon laws in many countries began to prescribe standards for safe operation—standards that regulated signaling, brakes, steam-locomotive boilers, track construction and maintenance, and employee training and work hours. Governments also began to regulate the financial activities of railroads. Railroads had to get governmental approval in order to set rates and fares, merge with other railroads, issue stocks and bonds, or alter train schedules.

Strict regulation was satisfactory as long as the railroads had what amounted to a monopoly in land transportation. However, when highway trucking, pipelines, and airlines began to take business away from the railroads, governmental regulation prevented the railroads from responding effectively to the new competition. As a result, many railroads ran into financial difficulties. Most countries responded by nationalizing their railroad systems and making up the railroads’ operating losses from tax revenues.

In 1971, with the formation of the National Railroad Passenger Corporation, known as Amtrak, intercity railroad passenger services in the United States began to receive government support. Most passenger commuter operations also receive funding from the states or localities they serve. Recognizing that the freight railroadscould no longer continue as private businesses under the existing governmental regulation, the United States Congress passed the Staggers Rail Act of 1980. This law reduced or eliminated much of the earlier regulation of rates and services and gave the railroads more freedom to compete with other types of transportation.

Railroad Modernization:-

Like their younger competitors, the railroads have become specialized carriers that concentrate on the types of transportation for which they are best suited. Railroads are particularly efficient at moving large volumes of bulk commodities such as coal or ore over long distances and transporting marine containers and piggyback highway trailers. Railroads are also efficient at carrying commuter passengers between suburbs and city centers and providing comfortable, fast intercity passenger services.

New technologies—in design, materials, and methods—have helped railroads become still more efficient. After World War II, for example, strong concrete crossties replaced wooden ties on many railroads, especially in Europe. Rail welded into long sections became the standard for most busy main lines. By the 1960s high-speed passenger trains were introduced.

Japan’s so-called “bullet train” was in the forefront of the new technology. It began operating on Oct. 1, 1964, to mark Asia’s first Olympic Games, which were held in Tokyo. The first section of the fabled Shinkansen (New Trunk Line, known as the New Tokaida Line) was a 320-mile (515-kilometer) stretch between Tokyo and Osaka. A 100-mile (160-kilometer) extension from Osaka to Okayama was completed in 1972, and the final segment—a 244-mile (393-kilometer) run to the Hakata station in Fukuoka, northern Kyushu—opened in 1975. Other lines, completed in 1982, radiate north of Tokyo to Niigata and Morioka. The Shinkansen was privatized in 1987.

France’s TGV became the supertrain of the 1970s and 1980s. It set a new world speed record of 320 miles an hour in 1990. The newer ten-car TGV trains are powered by front and rear electric locomotives. Computerized controls provide on-board signalization and fail-safe braking.

Some of the other countries where superspeed trains are running or planned are Great Britain, Germany, Italy, Sweden, Finland, Ireland, Australia, Canada, and the United States. Metroliners make daily three-hour trips between New York City and Washington, D.C.; although the trains are capable of faster runs up to 160 miles (260 kilometers) per hour, drawbacks on the existing line hold speeds to a maximum of 100 miles (160 kilometers) per hour. The first major North American project planned was to link the Florida cities of Miami, Orlando, and Tampa, but any of several other proposed lines, including a Texas line, from Dallas to Houston, may produce the continent’s first bullet train.

Several American railroads operate trains of RoadRailers, vehicles that have both rail and highway wheels. On the railroad they run coupled together in trains pulled by locomotives, then are separated and moved by highway tractors to their final destinations.

Among the more advanced systems proposed is the magnetic levitation, or maglev, train. Instead of wheels or steel rails, the system uses coils in the surface of the track, or guideway, to create a magnetic field that lifts the vehicles and propels them forward. By the late 1980s only short test systems had been built in Germany and Japan. Successful experimental runs were first made in the early 1990s using locomotives powered by environmentally friendly natural gas.

China

Introduction:-

Everything in China seems larger than life, and perceptions of the country must be adjusted to its enormous scale. Its culture and its civilization go back thousands of years. Its vast area of more than 3,690,000 square miles (9,560,000 square kilometers) is the third largest in the world, after Russia and Canada. With a population of more than 1.2 billion, it is Earth’s most populated country.

The Himalayas along China’s southwestern frontier with India are the world’s tallest mountains. China’s greatest river, the Yangtze, is the world’s fourth longest. The Taklimakan Desert, in western Xinjiang Uygur Autonomous Region, is one of the driest spots on Earth. The area of loessic soil (fine, siltlike soil created by wind action in dry regions) in Shaanxi and Shanxi provinces is probably more extensive thanin any other place.

China has a great wealth of mineral and natural resources. Reserves of coal, petroleum, iron ore, tungsten, tin, bauxite, copper, limestone, and many other minerals needed in modern industry are abundant. Used in domestic manufacturing and exported to obtain money, these resources provide China with a solid foundation for rapid industrial growth.

Another significant aspect of China is its long cultural and national history. The Chinese people have shared a common culture longer thanany other group on Earth. The Chinese writing system, for example, dates back almost 4,000 years. The imperial dynastic system of government, which continued for centuries, was established as early as 221 BC. Although specific dynasties were overturned, the dynastic system survived. China was even ruled at times by foreign invaders, such as the Mongols during the Yüan Dynasty, from AD 1279 to 1368, and the Manchus during the Ch’ing Dynasty, from AD 1644 to 1911, but the foreigners were largely absorbed into the culture they governed. It is as if the Roman Empire had lasted from the time of the Caesars to the 20th century, and during that time had evolved a cultural system and written language shared by all the peoples of Europe.

The dynastic system was overturned in 1911, and a weak republican form of government existed until 1949. In that year, after a long civil war, the People’s Republic of China, with a Communist government, was proclaimed. This government and the ruling Communist party have controlled China ever since. Although the dynastic system has disappeared, the People’s Republic occupies essentially the same territory and governs the same people. If anything, the culture and power of China seem stronger in the late 20th century than at almost any other period in history. Under the People’s Republic, China’s role in world economic and political affairs has grown increasingly more important.

Size alone makes China an important member of the world community, a fact that the United Nations has recognized for some years. China has had a permanent seat on the UN Security Council since that organization was founded. For a number of years, this seat was occupied by Chiang Kai-shek’s Nationalist government, which had fled to Taiwan when the Communists came to power.

In 1971, however, the UN General Assembly voted to turn this seat over to the representatives of the People’s Republic. The People’s Republic is recognized by mostnations as the legitimate government representing mainland China. After 1971, China joined a number of UN and other international organizations, such as the International Monetary Fund. It has become a more active participant in international programs.

An example of China’s growing involvement with the world community is the rapid increase in its foreign trade with countries outside the Communist bloc. Between 1959 and 1982 China’s total trade turnover with non-Communist countries rose from $1.3 billion to about $32 billion. This represented a significant shift in policy on the part of China. It indicates they had come to believe that the key to economic growth and modernization—including access to new industrial and scientific technologies—lay in closer economic and political relationships with developed countries such as Japan, the United States, Germany, and the United Kingdom.

By the early 1980s, after several decades of civil war, conflicts with foreign powers, and domestic upheavals, China seemed to have stabilized. Domestic policies and programs appeared to focus on improving the economy, the educational system, and the level of scientific and technical achievement. Disputes with neighbors and foreign powers remained, but they were muted. The emphasis had switched to the practical problems of economic growth.

Although China is still a poor country, sheer numbers (22 percent of the world’s population) and the size of the overall economy make it an important force among theworld family of nations. China has disclaimed any ambition to be a major world power, but its leaders like to represent themselves as speaking for all the less developed and nonaligned countries of the Third World. How effectively China can maintain that position depends on the policies of its leaders in the international community and the success or failure of its economic development programs.

The Land:-

Like the United States, China is located in the mid-latitudes. On the east and south China faces major arms of the Pacific Ocean. Consequently, eastern China—especially the southeastern coast—is humid and has generally mild winters compared to the rest of the country. High mountains close off the west, however, and much of the western two thirds of the country is relatively dry and isolated. Traditionally, China’s western regions have been sparsely populated, largely by minority peoples such as Tibetans, Uygurs, and Mongolians.

Surface Features:-

China’s land surface is rugged and uneven. Almost one third of the total area consists of mountains and hills. Traveling westward from the coast in central China means going steadily upward across a series of hills and ridges, plateaus, and elevated basins. This climb ends at the Plateau of Tibet with the Himalayas on its southern flank.

The major mountains, plateaus, and basins of the west—the Himalayas, Kunlun Mountains (also Kunlun Shan), Tian Shan, Altai, Plateau of Tibet, Tarim Basin, and Junggar Basin—follow an eastward axis. The main structural orientation of the mountains in the east—Great Khingan Range (also Da Hingan Ling) and Taihang—is north-south. Where these mountains cross, they form what has been likened to a gigantic checkerboard. This checkerboard pattern is not so clear in the south, however, because the low but rugged Nan Ling mountains form a more complex association of hills and ridgelines.

In the southwest the ridges are folded into extremely rugged, high uplands separating the major drainage systems of several great rivers. Extensive areas in southwest China are underlaid with limestone. This karst, or limestone, region has been weathered into some unusual and striking landscapes that feature a variety of steep domes and towers. These landscapes have served as a popular theme for the traditional school of Chinese landscape painting.

Major Rivers:-

China’s two most famous rivers, the Huang He (also called the Yellow River) and the Yangtze, rise on the eastern edge of the Plateau of Tibet and flow eastward, eventually emptying into, respectively, Bo Hai Gulf and the East China Sea. Several other large rivers that rise in eastern Tibet, such as the Mekong, Salween, and Brahmaputra, flow into Southeast Asia or India. Another important river, the Amur, forms part of the boundary between China and Russia in the northeast. China’s major southern river, the Xi, together with the Zhu Jiang (Pearl River) and other rivers, forms the important large southern delta plain in which the southern city of Canton is located. (See also Yangtze River.)

Natural Resources:-

China has a large and varied stock of natural resources. The variety of different landforms, soil conditions, and climate patterns offers many different kinds of opportunities for agricultural production. A tremendous range of food and industrial crops can be grown, and this makes it possible for China to keep imports to a minimum.

Another aspect of China’s natural endowment is its rich supply of mineral resources, a product of its complex geology. In ancient geologic times much of what is nowChina was under the sea. Movements of the Earth’s crust against three huge, stable masses of ancient Precambrian rock (in southeastern China, Tibet, and Inner Mongolia) gave rise to China’s characteristic parallel ridges and plains. In the lowlands and basins, which were repeatedly submerged during the Paleozoic era hundreds of millions of years ago, great quantities of carbon-containing material were deposited, and these became the carbon-based fossil fuels—coal and petroleum—that exist today. Deposits of other minerals accumulated as a result of geologic processes, including vulcanism associated with the crustal movements.

China’s coal and petroleum reserves are abundant. Reserves of tungsten, antimony, tin, mercury, salt, fluorspar, and magnesite are among the largest in the world, and the tungsten and antimony deposits may be the largest. China also has sizable reserves of iron and manganese ores, bauxite (aluminum ore), limestone, and copper, though it remains to be determined whether these are sufficient to meet China’s growing domestic needs.

China leads the world in the size of its coal reserves, which are estimated at more than 600 billion tons. These reserves would keep China supplied with coal for about 500 years if usage were to continue at its present level. China produces more than 1.1 billion tons of coal annually, most of it bituminous coal or lignite. China relies on coal as its primary energy source, a condition likely to continue at least through the 20th century.

Petroleum is not as easy to estimate as coal, but China is believed to have extensive reserves, both on land and offshore. There are a number of large areas with theright characteristics to contain oil and gas scattered throughout the country, and oil and gas have been discovered in more than half a dozen of them. In addition, there are believed to be major offshore deposits in the Bo Hai Gulf; the Yellow Sea; the East China Sea; the Formosa, or Taiwan, Strait; and the South China Sea. All of these deposits are in the continental shelf, the natural extension of the mainland under the adjacent water bodies.

Offshore prospecting is under way in several locations, with a number of Western and Japanese petroleum companies assisting China. Some offshore drilling has taken place, and producing wells have been developed in the Bo Hai Gulf region. In recent years, however, most of China’s petroleum has come from the large Daqing field in Heilongjiang Province in the northeast or from fields in the North China Plain near the mouth of the Huang He. Petroleum production in 1992 totaled 1billion barrels, enough to meet China’s domestic needs and provide a small amount for export.

Difficult Environments:-

One of the most unusual and challenging regional environments in China is found on the plateau west of the North China Plain, called the Loess Plateau. Here the special type of soil known as loess covers tens of thousands of square miles. The loess is blown by the wind from the adjacent Ordos, Alxa, and Gobi deserts and has accumulated over thousands of years. In many places the loess forms a thick mantle that completely covers the original landforms. When the forest or prairie vegetation on the loess is disturbed, the soil in the upland regions is easily eroded and formed into gullies by summer rainstorms.

The region around the confluence of the He and the Huang He is called the cradle of Chinese civilization. It was there that Late Stone Age people began to develop the culture that evolved into the Chinese civilization. When these people began to farm, they disturbed the original forest vegetation. Ultimately, this increased the rate of erosion and led to severe environmental problems. In addition to scarring the surface landscape with gullies and badlands, the runoff found its way into the Huang He, adding to the silt burden of that stream. The high silt content of the Huang He, which gives the stream its common name of “Yellow River,” has resulted in a high deposit rate and a tendencyto flood farther east on the North China Plain. The chronic and severe flooding of the Huang He, sometimes accompanied by major changes in the location of the channel, led the Chinese to call it “China’s sorrow.” Tremendous efforts and vast amounts of human labor have been used in building levees and channels to control it.

The southwest, with its extensive limestone deposits, irregular karst towers, and subsurface drainage networks, presents a different set of difficulties. There the problems are to find areas of level land large enough to cultivate and to keep water on the surface so it can be used for irrigation. Other environments within China pose their own challenges. Farming is difficult in many parts of the country, and large investments are needed to improve the land and control water for irrigation. Transportation networks are difficult and expensive to plan and build in many areas, where inaccessibility and geographic isolation have seriously impeded development for centuries.

Climate, Vegetation, and Animal Life:-

In terms of climate, China may be divided between the humid eastern region and the dry west. The humid east may be further subdivided between the warm and humid south and southeast and the temperate-to-cool, moderately humid north and northeast. Much of the humid eastern region of China exhibits a monsoonal pattern of temperature and precipitation. In a monsoon climate, the warm summer months are typically the months of maximum precipitation.

Precipitation:-

Only the south and southeast have sufficient rainfall to support intensive farming. Just 20 to 26 inches (500 to 650 millimeters) of precipitation are common throughout much of the north and northeast. This is not enough to grow rice or to raise more than one crop per year. Consequently, much of north and northeast China must rely on irrigation water.

Western China gets very little rainfall. Most of this region consists of mountains or enclosed desert basins. In extreme western Xinjiang at Kashgar in the Tarim Basin, rainfall averages only 4 inches (100 millimeters) per year. About the same amount falls farther northeast, at Ürümqi in the Junggar Basin, while near Lhasa, high on the Plateau of Tibet, the average is about 11 inches (280 millimeters). These dry conditions permit little farming, even where drought-resistant crops such asgaoliang (Chinese sorghum) and some of the millets are grown. Irrigation is essential, and most of the settlements in western China developed initially around oases where there were dependable sources of water. In Tibet less water is needed because of the lower average temperature, but irrigation is becoming increasingly important as a means of making agricultural output more reliable.

An important feature of China’s climate is the annual occurrence, usually in the summer or autumn, of great storms that sweep in from the western Pacific. These storms, called typhoons, are similar to Atlantic hurricanes. They are accompanied by high winds and tremendous quantities of rain, usually concentrated within a fewhours. The storm paths most commonly focus on the southeastern coast, though sometimes they sweep northward toward Japan. Great damage may be done by the flooding caused by typhoons, especially in low-lying floodplains and basins.

Temperature:-

In general, temperature patterns in China are determined by north-south location, though there are some exceptions. South of the Qin Ling Mountains, an eastward extension of the Kunlun Mountains, average annual temperature is high and winters are generally mild. For example, the middle and lower Yangtze Basin in southeastern China has mild winters and extremely hot summers, and the average temperature increases only gradually as one moves south into the tropical coastal areas. Average annual temperature drops rapidly north of the Qin Ling barrier. In much of this area there is a continental climate. This is reflected in the cold winters that occur in such cities as Beijing, Xi’an, and Harbin.

The length of the growing season for plants, defined as the period during which daily mean temperatures are above 43° F (6° C), varies in line with the temperature patterns. Thus, most of the area south of the Yangtze has a growing season of at least 300 days, mild enough to grow two crops a year. Along the southern and southeastern coast the growing season lasts all year round. Light frosts may occur, but they are not severe enough to kill most plants. North of the Yangtze Basin average temperatures drop sharply, and the growing season shortens rapidly as distance north increases. In the northern interior the growing season is less than 180 days.

Vegetation:-

As might be expected from its huge area and variety of regional climates, China has a great range of vegetation. Most of the types of plants that grow in the Northern Hemisphere can be found there, except for those varieties common to arctic and tundra regions. In Hainan Island in the extreme south, and along the southern coast, there are rain forests and associated plant communities typical of the humid tropics. The high, rugged mountains of western China and Tibet contain alpine and subalpine plants. Other regions of China exhibit a variety of plant life common to deserts, steppes and savannas, prairie meadows, mangrove swamps, and coniferous evergreen and deciduous forests.

It is possible, however, to divide this broad range of plants into regional groupings. Thus there is a clear distinction between the character of the plant life in the humid and subhumid east and that of the dry west. The eastern part of the country can be further subdivided into four regions: (1) the tropical, humid southeast, which supports a tropical rain forest; (2) the subtropical southern and central area of broadleaved evergreens, pines, and varieties of bamboo; (3) the mid-latitude forest zone of mainly deciduous species, which extends from the Yangtze north to the Northeast region, formerly called Manchuria; and (4) the less humid but cooler extreme north and northeast, with evergreen conifers and northern deciduous tree species similar to those of the taiga zone in Russia. Throughout China coarse grasses have grown up where forests have been removed. In southern China there is a tough, fibrous type of grass that impedes further economic use of the land. Savanna grasslands are common in the tropics.

The large, dense population of eastern China has placed great pressure on the natural vegetation. Especially serious is the demand for wood and forest products. Over the centuries, the great need for firewood, construction material, and paper has led to a serious loss of trees. In many places in eastern China it is difficult to determine the nature of the original vegetation. Today the main commercial forests (mostly conifers, birch, and ash) are found in northeastern China. There are also important and accessible commercial forests on the eastern flank of Tibet and Qinghai.

In the mountains, deserts, and steppes of the west, where rainfall is low and winters are cold, the flora is not rich. Vegetation in the deserts and at higher elevations often consists of several species of grasses and subshrubs. Three major vegetation zones of western China have been identified: Inner Mongolia, the Junggar and Tarim basins, and Tibet. Within these three zones, the plant life varies according to local ecological conditions rather than according to north-south location. Trees, for example, are found where precipitation is greatest and where the average annual temperature permits their growth.

On the windward, northern slopes of the Tian Shan facing the Junggar Basin, forests of such trees as spruce, birch, ash, and aspen are found up to 10,000 feet (3,000 meters) above sea level. However, there is great variation in the extent and type of tree cover as a result of differences in slope conditions, temperature, and moisture. At higher elevations and in drier steppe and desert locations a variety of grasses, shrubs, and sedges are common. The harshest region in western Chinais the western part of the Plateau of Tibet, a cold, forbidding desert above 14,800 feet (4,500 meters). Plant growth under such conditions is highly restricted.

Soils:-

The nature of the underlying bedrock and the local topography are the most important factors in determining the formation and character of a soil, but climate and vegetation also play a major role. For example, in humid regions, especially under forest cover, the soils are leached, or drained by water, of certain minerals and nutrients and become acidic. In drier, cooler environments, where soils have developed under a grass cover and chemical weathering has been reduced, the soil typically has a higher humus content and is alkaline.

In the humid tropical and subtropical regions of southeastern China, the soils generally have been leached of alkalis, leaving high concentrations of aluminum and iron oxides in the subsoil. Commonly known as lateritic soils, they are acidic and frequently have a reddish color. In general, they are not good for agriculture. A similar process has taken place in the humid but cooler areas of central and northeastern China and also at higher elevations in the west, especially where forests of cone-bearing trees have been present. In these soils, alkalis and iron compounds have been leached from the surface layer and clay and humus have accumulated in the subsoil. Traditionally called podzols, these soils are common at higher elevations in much of China.

The dry areas of China, especially in Inner Mongolia, Gansu, Ningxia Huizu, Xinjiang, and parts of northeastern China, are covered with desert, steppe, and prairie soils, some of which are very rich. These soils are fundamentally different from the acidic types. Typically, they develop in dry areas as a result of the concentration of magnesium and calcium carbonates and have a high humus and alkaline content. They range from the extremely rich chernozem, or black earth, type of the northeast to the thinner, poorer brown steppe and gray-brown near-desert soils of Inner Mongolia and arid areas of Xinjiang.

In addition to these major soil groupings, there are other soil types that are important. Loess, the windblown, fine-grained, yellow earth found over wide areas in Shaanxi and Shanxi provinces, is generally alkaline and potentially fertile, but it erodes easily. Many desert and mountain soils are thin and poorly developed and are essentially useless for any agricultural purpose. Perhaps most important for agriculture are the alluvial soils associated with the floodplains of streams and rivers. They are generally acidic and not rich, but they are easy to work and are usually near water. Especially in central and south China, they are used extensively for the production of such crops as rice, wheat, and cotton. With proper techniques, they can support some of the world’s most intensive year-round farming.

China has only a modest supply of arable land (about 10 percent of the total land area). Where precipitation is sufficient for growing crops, however, Chinese farmers have satisfactory to good soils to work with or they have improved existing soils by adding natural nutrients. Controlling runoff and erosion is the great problem in the loess areas. In low-lying floodplains, the water tables may be too high, resulting in the accumulation of excessive chemical compounds called salts. Nevertheless, China’s soils are generally satisfactory, and local farmers and scientists have worked together to maintain and improve their quality and productivity.

Animal Life:-

A tremendous number of animals are native to China. Some, such as the giant panda and the Yangtze alligator, are found nowhere else, and in recent years the Chinese government has stepped up efforts to protect and preserve them.

Animals of the north include the Siberian tiger, wolf, badger, lynx, sika and musk deer, weasel, sable, stone marten, flying squirrel, snow rabbit, pheasant, mandarin duck, and the white-headed crane. Dry areas of the northwest are home to the wild donkey, Bactrian camel, Mongolian gazelle, and Mongolian beaver, as well as big horn sheep. Western birds include the whooper swan, pheasants, quail, and the great bustard. Sika deer, Tibetan antelope, rock sheep, yak, snow leopard, Himalayan brown bear, and such unusual birds as the Tibetan snow cock live at high elevations in Tibet and Qinghai.

Much of the distinctive animal life of the southern and central parts of the country is associated with forested hills or aquatic environments. The panda, golden cat, clouded leopard, rhesus macaque, and takin, or goat antelope, are found in the southwest, and the giant salamander, Yangtze dolphin, crocodile lizard, several types of badgers and weasels, the golden langur, and the tiger in the Yangtze Basin. South China has hornbills, pheasants, monkeys, deer, and civets as well as the tigers and clouded leopards.

This listing is by no means complete, but it indicates the rich variety of wildlife found in China and the importance of China as a preserve for the world’s animals. Many of China’s animals are the same or similar to those in neighboring lands. Distinctively Chinese species occur especially in the mountains.

The People:-

China has the largest population of any country in the world, with an estimated 1,265,207,000 people in 2000. This population had grown rapidly in recent times, expanding by approximately 15 million each year, an increase equal to the total population of Australia. Between 1964 and 1982 China added 313 million to its population, more people than lived in the Soviet Union during that time. This rapid growth has occurred because the death rate has dropped sharply. The birthrate has also fallen, but the total population is enormous, and there are many young people. Thus, without extreme means of population control, the outlook is for continued rapid increase. The problem of providing an acceptable quality of life for a society this large—and growing ever larger—is a major concern in China. In an effort to reduce the rate of population growth, the Chinese government since 1978 has promoted the one-child family among the Han. (All married couples are urged to have only one child.) Rewards such as better opportunities for that one child are offered. Family-planning advice and birth-control techniques are easily available and commonly used. If a woman becomes pregnant with a second or third child, she is urged to have an abortion. Sterilization after one child is also being promoted.One problem facing the government is the widespread desire for male children. If the first child is a girl, she may be neglected. Some incidents of infanticide, the killing of children, have been reported in cases of female children. Despite all the government’s efforts, the family-planning program and campaign promoting the one-child family have had only limited success in rural areas, where peasant families still want sons to carry on the male family name and for the heavy labor necessary on rural farms. Until rural people participate fully in family planning, China’s population will continue to grow rapidly.

Society and the Family:-

Traditionally the family has been the most important unit of society, and this is still true. The family is also an important economic unit. In rural areas, where about 72 percent of China’s people live, the traditional family consisted of the head of the household, his sons, and their wives and children, often living under one roof. Common surnames gave families membership in a clan. In some villages all families had the same surname, or four or five surname clans might account for most of the villagers.

Land, the main form of wealth in traditional China, was divided equally among all the landowner’s surviving sons when he died. Thus, as China’s population grew, the landholdings became smaller and smaller, and many people were very poor. In the first half of the 20th century the family as a social unit came under severe stress. Rural conditions were bad, income was low, and food was often scarce. Health care was poor or nonexistent for most peasants, and mortality rates were high. Civil unrest, warfare, and foreign invasions added to the difficulties.

After the Communist revolution in 1949 rural conditions stabilized. Private ownership of land was abolished, but each peasant family was given a small plot to farm. Health care improved. The fluctuations in the food supply leveled off and life expectancy increased. Living conditions for the average peasant are generally better today than they were in 1949, and there are opportunities for at least some education. All these things have meant a considerable improvement in the quality of life and greater security for the family as a social unit.

Today some rural families are still likely to have three generations under one roof. Despite state ownership of the land, they once again serve as basic production units. The Production Responsibility System, initiated in 1978, permits individual families to contract with their local production team or brigade to lease land for farming. Production quotas are also contracted. Whatever is left after taxes are paid and quotas are met belongs to the family. If a family works hard, it can meet its contract quotas and also produce a surplus for consumption or sale. This program was designed to stimulate production, but one result has been to strengthen the role of the traditional family as a consuming and producing unit.

Urban family life is different from that in rural areas. In the cities, families usually are smaller, often composed only of parents and children. Since both parents work, the children are left in day-care centers or schools. Sometimes couples are split up if their work units are not close together, and husband and wife may see each other only rarely. Despite such problems, family life for most people in the cities is stable, and family ties continue to play a major role in the lives of both parents andchildren.

Cities:-

More than 500 million people live in and around cities in China, according to the 1990 census. There are more urban dwellers in China than are found in either the United States or Russia. Some of the cities are quite large. Shanghai, for example, has more than 7 million people; Beijing has more than 6 million, and Tianjin more than 5 million. Many cities have more than 1 million people each. Even so, city dwellers represent a relatively low percentage of the total population—about 28.1 percent.

China’s cities are expanding rapidly. The government is attempting to regulate urban growth in order to avoid such problems as congestion, overcrowding, slum development, and unemployment. It is difficult, for example, for a person to move to a city unless he or she has a permanent job and a housing permit. Through suchconstraints, China can slow the migration of people to cities and encourage the kind of urban and regional growth that planners believe is most suitable. Nevertheless, it seems quite likely that urbanization, the flow of people to cities, will continue to be a factor as China modernizes and its economy continues to expand.

Ethnic and Language Groups:-

The concept of being Chinese is not based on race. Rather, it is a cultural concept. To speak and behave like a Chinese—in short, to accept the Chinese system of cultural values—is to be Chinese. The Chinese refer to themselves as Han or sons of Han (as in Han Dynasty, a period of great historical significance). Throughout history, small ethnic groups that came into contact with the Han Chinese have adopted Chinese culture and have been absorbed into the mainstream. This process continues, though there are legal guarantees designed to protect the rights and culture of minority nationalities.

Traditionally, the definition of a minority nationality in China is a group of people who speak a common language, occupy a common area, and share a common sense of social values. They see themselves as non-Chinese—not belonging to the majority Han Chinese population. In 1990 approximately 91 million people, or 8 percent of China’s population, were members of minority nationalities. In 1978 the central government recognized 55 minority nationalities with populations ranging from 300 (the Lobo, a small group living in Tibet) to 12 million (the Zhuang in southwestern China). Thirteen of the nationalities had populations of 1 million or more, and 27 had at least 100,000 members.

Although the minority nationalities represent a comparatively small proportion of the total population of China, they have an importance in Chinese society beyond their numbers because of the strategic territories they occupy. Most minority nationalities live along China’s sparsely populated frontiers and have cultural relationships with minority groups in neighboring countries, such as Kazakhstan, Kyrgyzstan, Russia, North Korea, Mongolia, Thailand, and Myanmar (formerly called Burma). If these groups became hostile toward the central government it could affect China’s national security.

In part, the guarantees protecting the minority nationalities are expressed in the structure of China’s administrative system. In addition to the 22 provinces, there are five autonomous regions, based on the location of five of the larger and more important minority nationalities. These are the Zhuang, a group of more than 42 million occupying the Guangxi Zhuangzu Autonomous Region; the Hui, or Muslims, a religious group of more than 4 million occupying the Ningxia Huizu Autonomous Region; the Uygurs, a Turkic group of more than 15 million in the Xinjiang Uygur Autonomous Region; the Tibetans, or Zang, a group of 2.2 million who live in the Tibet Autonomous Region and Qinghai Province, an area of high plateaus and mountains bordering India; and the Mongols, a group of more than 21 million occupying the Inner Mongolian Autonomous Region between Mongolia and northern China. In addition, smaller units such as autonomous prefectures, leagues, and banners (equivalent to British counties) are based on their occupancy by even smaller minority groupings.

This administrative system is designed to give the minorities political equality with the Han people and to help them maintain their distinctive identities. At the same time, Putonghua (based on the Mandarin dialect spoken in the Beijing area) is being promoted as the official spoken language of the country. All minority peoples are urged to learn it. Generally, all minorities live harmoniously with the Han. The government has adopted measures to promote economic development among minorities to enable them to catch up with the Han.

Religion:-

Before the Communist Revolution, a number of religious and philosophical systems were practiced in China. Traditionally Taoism and Confucianism provided ethical guides to the proper behavior of individuals and officials. Both of these systems originated in China during the so-called Golden Age of Chinese thought, several centuries before the beginning of the Christian era. Taoism sought to promote the inner peace of individuals and harmony with their surroundings. Confucianism, based on the teachings and writings of the philosopher Confucius, is an ethical system that sought to teach the proper way for all people to behave in society. Each relationship—husband-wife, parents-children, ruler-subjects—involved a set of obligations which, if upheld, would lead to a just and harmonious society. Following his teachings would also promote a stable, lasting government (see Confucius).

Buddhism, which came to China from India as early as the 1st century AD, was a more conventional religion. Its followers attended occasional services, practiced rituals, and supported a temple on a regular basis. It has been estimated that more than 68 million Chinesestill consider themselves Buddhists, though it is unlikely that they practice the religion regularly (see Buddhism). Prior to 1949, practices that may best be called folk religions were common throughout China. Although they incorporated elements of Buddhism and, especially, Taoism, these religions were usually local, often based on local gods, and served the local people.

Christian missionaries have been active in China since Roman Catholics belonging to the Jesuit order arrived in the early 17th century. Protestant missionaries first appeared in the early 19th century. All the Christian missionaries had difficulty converting the Chinese because Christianity was associated in the popular mind with Western imperialism. By 1949 there were only 3 or 4 million Christians in China, less than 1 percent of the total population. Islam came to China mainly from CentralAsia, where it was practiced by many of the Turkic peoples. Today there are believed to be more than 4 million Chinese Muslims. One autonomous region, Ningxia Huizu, has been designated for Islamic adherents.

The Communists have discouraged religious practices, which they consider anti-socialist. Many temples and churches have been closed and their property taken. During the Great Proletarian Cultural Revolution (or simply the Cultural Revolution), a mass movement that lasted officially from 1966 to 1977, conditions were especially difficult, and religious practitioners were persecuted. The situation eased after 1977. A number of Buddhist temples were allowed to reopen. Worship services among Christians were permitted once again, and it is believed that as many as 2 million Christians are practicing their faith in China. The Chinese government is cautious about all religious activity, especially if it happens to involve foreign people in any way.

Language, Literature, and Art:-

Chinese culture is remarkable for its duration and diversity. The oldest art forms in China are music and dance, both of which continue to be vital elements of modern society. The written language and literature are central to China’s culture. Scholars have identified inscriptions on pottery dating to about 4000 BC, and written Chinese has developed continuously since about 1200 BC. China’s tradition of storytelling is among the richest in the world.

The Chinese Language:-

There are two elements to the Chinese language: the written language, based on individual symbols called characters, each of which represents an idea or thing; and the spoken language, which includes a number of different dialects. The written language originally had no alphabet, but it was easily understood by literate people no matter what dialect they spoke. Since the early 1950s a system using the Latin alphabet, called Pinyin, has been developed in China, and it is now in common use. Most of the spellings of Chinese sounds and names in this article are based on the Pinyin system of romanization. Those that are not are generally very familiar in their conventional form, such as the name Chiang Kai-shek.

Some of the numerous dialects of spoken Chinese are totally different from each other. All of them use tones to distinguish different words. Mandarin, which is spoken in the Beijing region and in northern China generally, has four common tones. Cantonese, spoken in southeastern China, has nine tones and is quite different from Mandarin. Today Putonghua, which is based on Beijing-area Mandarin, is the official language of government and education, and everyone is expected to learn to speak it. The central government is also expanding the use of the Pinyin romanization system and is urging citizens to learn this alphabetized system of writing Chinese words. (Pinyin represents the spoken sounds of Putonghua, which is an oral representation of Chinese characters.) Citizens are also urged to learna simplified system of Chinese.

Literature:-

China has a very old and rich tradition in literature and the dramatic and visual arts. Early writings generally derived from philosophical or religious essays such as the works of Confucius (551–479 BC) and Lao-tzu (probably 4th century BC). These writings were often about how people should act and how the society and politicalsystem should be organized and operated. A strong tradition of historical writing also evolved. After the fall of a dynasty, for example, a grand history of the late dynasty was commissioned and written by scholars in the next dynasty.

In addition to philosophical, religious, and historical writings, China also produced poetry, novels, and dramatic writings from an early date. Poetry became well established as a literary form during the T’ang Dynasty, from AD 618 to 907. One of China’s greatest poets, Li Po, wrote during this period. This tradition of poetry, often dealing with the relationship of humans to their natural surroundings, has continued.

Drama is another old and important literary form. Chinese drama usually combines vernacular language with music and song and thus has been popular with the common people. A variety of popular and standard themes are presented in Peking Opera, which is probably thebest known of several operatic traditions that developed in China. Chinese opera is a favorite artistic and cultural medium.

Early Chinese novels often stressed character development and usually centered on an adventure or supernatural happening; an example is the classic Ming version of ‘Shui-hu chuan’ (The Water Margin). Historical themes were also popular, as in the ‘Romance of the Three Kingdoms’, written in the late Yüan period. There were also love stories such as the extremely popular ‘Dream of the Red Chamber’, probably China’s most famous novel. Many of the early novels were written anonymously. Often these works were written in the vernacular, and many authors felt it was beneath their station to be associated with this type of writing.

China’s literary tradition continues to the present, though much 20th-century writing has concentrated on efforts to reform or modernize China. Probably the most famous 20th-century writer is Lu Xun, a poet, essayist, and novelist whose work focused on the need to modernize through revolution. Under Communism, writers have been expected to uphold the values of the socialist state, though the degree of control over their output has varied.

The Visual Arts:-

Chinese art, like Chinese literature, goes back many centuries. Early themes were developed from religious and supernatural beliefs or from the natural environment and landscape. One of the oldest and most basic forms of Chinese art is calligraphy, the painting of the Chinese characters with a brush. Calligraphy has developed as a pure art form with its own standards of excellence. Building on the tradition of calligraphy, Chinese painting developed a distinctive style that differs greatly from Western painting. It is more efficient in terms of brushstrokes and appears more abstract. Landscapes have always been a popular theme, and sometimes these appear bizarre to the Western eye. To the Chinese painter, they may represent a figurative view painted with a few swift strokes of the artist’s brush.

With their stress on simplicity and economy, Chinese calligraphy, painting, and poetry are closely related. In all of them, the artist seeks to express both inner harmony and harmony with the natural surroundings. Chinese poets and painters often have sought inspiration by withdrawing to isolated, mountainous areas, and these landscapes have become conventional themes of Chinese art. Similarly, Chinese architecture has traditionally aimed to convey harmony with society and nature.

The magnificent life-size terra-cotta statues of men and horses, discovered in the early 1970s in the tomb of an emperor who died in 210 BC, provide some indication of the long history of Chinese sculpture. After the introduction of Buddhism into China, Buddhist subjects became dominant themes of the sculptor’s art. Perhaps best known (and most copied) in the West, however, are the works of Chinese decorative artists, such as pottery, bronzes, lacquer ware, and exquisitely detailed jade and ivory carvings.

Education and Health:-

The large population and vast territory of China pose an enormous challenge for the Chinese government in terms of meeting the basic educational and medical needs of the people. The school system in China is an important means for both instilling values in and teaching skills to its people. Traditional Chinese culture attached great importance to education as a means of enhancing a person’s worth and career. The health of the Chinese population has improved overall since 1949, though health facilities remain unevenly distributed.

Education:-

The traditional educational system in China was based on literacy and the ability to read and write essays about the Confucian classics. Social advancement was achieved through successful completion of the imperial examinations, leading to an appointment in the imperial bureaucracy. Therefore, the questions asked in the imperial examinations determined the nature of the educational system. Since this examination system was used for many centuries and was not discarded until 1905, the Chinese educational system changed little during that time. The emphasis was on interpretation of the Confucian classics and the writing of elegant essays. Practical and scientific subjects were excluded.

Although in theory the imperial examinations were open to anyone, only the wealthy could afford to give their children the years of schooling that were necessary for success. It is no wonder that the highest social class, the elite of traditional Chinese society, came to be called the scholar-gentry. They controlled the land and wealth, and, in general, only their sons were taught the Confucian classics, passed the imperial examinations, and became imperial officers.

In the late 19th century, as the weaknesses of the Chinese economic and social system became more obvious, calls for reforming the educational system grew louder. Peking National University, with modern programs and courses, was founded in 1898. In 1905 the old imperial examination system was abolished. New courses in Western science and other nontraditional subjects were introduced, and new schools were established. The early 20th century was a period of rapid educational and intellectual change. Many young Chinese wanted to overturn the old society completely and reform China along modern, Western lines. Others advocated educational reform and social and political change, but within the framework of the traditional Confucian values. During the first half of the 20th century vast efforts were made to promote literacy. Both the Nationalist and Communist parties supported literacy and education, and both parties used education to promote their political goals. By 1945, however, it was estimated that only 20 percent of China’s people could read and write.

Since the Communists came to power in 1949 literacy has risen rapidly. Today it is estimated that 78 percent of adults are literate. Educational policy, however, has varied considerably. Generally, a primary school education has been made available to almost everyone, and about 40 percent of young people are able to attend middle school. This reflects a belief that basic knowledge is essential to rural development and economic progress.

Education at the college or university level is difficult to obtain, however. The average primary school student has about one chance in 145 of enrolling in a university or college. More and more of China’s young people are finishing high school, but no more than 2 to 3 percent of high school graduates go on to the next level. Policies on college admission have changed from time to time, and the basis of selection is not always clear. During the Cultural Revolution stress was placed on “good political background” as a requirement, and technical expertise was strongly criticized. Many schools and most universities were closed at that time, and education for China’s youth and young adults was largely interrupted.The political climate changed in the late 1970s. Schools and universities were reopened. Admission came to be based on achievement, and scholastic goals emphasized technical learning and proficiency in subject matter. The political leaders who came to power after the Cultural Revolution believed that an educated group of professional managers, technicians, researchers, and teachers is essential for the modernization and development of China. Since 1978 the only requirement for admission to college has been a passing score on a college-entrance examination. The political background of an applicant’s parents is no longer a factor in college admissions.

Health and Welfare:-

There has been remarkable improvement in the health and material well-being of most of China’s people since the civil war. Life expectancy at birth has more than doubled in a little over four decades, rising from an estimated 35 years in 1949 to more than 71 years in 1992. In the same period, the annual death rate declined from 23 per 1,000 population to about six per 1,000.

Two major factors help to account for this progress. First, there has been a steady general improvement in the diet of the average citizen, resulting from larger and more reliable crop production. The old problem of periodic famine has largely disappeared, though poor harvests (such as that of the Loess Plateau in 1980) may still result in serious malnutrition. The average daily intake in the early 1990s was 2,700 calories per citizen, which is sufficient to sustain life and support a fair degree of physical activity. This compares with an average intake of 3,000 to 3,500 calories per person in the more heavily industrialized countries of the West.

The second factor is the great improvement in the nature and quality of health care. Diseases such as tuberculosis, cholera, typhus, malaria, leprosy, smallpox, typhoid, and bubonic plague traditionally took a heavy toll of lives in China. In addition, a variety of debilitating parasites, such as hookworm and the trematode worm that causes schistosomiasis, were widespread. Dysentery and acute diarrhea were serious problems, especially among young children. Poor diet, insanitary conditions, poverty, and lack of health care made the entire population vulnerable to disease. Fatal illness was frequent and often struck babies and young children.

The Communist government has made a tremendous effort to improve this situation. Inoculation against some diseases has been emphasized, as have cleanliness and sanitation. Health facilities, ranging from hospitals and clinics to “barefoot doctors”—people with some medical training who work especially in the villages—have been made available to the entire population. The cost of health care is low, and it is often provided by the farm commune or factory where a person isemployed.

Most of the epidemic diseases that used to sweep over China have been brought under control. Such diseases as tuberculosis, encephalitis, cholera, and malaria and certain parasites still present problems, but to a lesser degree than in the prerevolutionary period. Diarrhea and dysentery are likely to continue as long as human waste (referred to as night soil) is used as a type of farm fertilizer. Nevertheless, the much improved figures of life expectancy indicate the tremendous progress that has been made in the fight against diseases.

The Economy:-

China’s traditional economy was based on rural activities and farm production. Ownership of land was the main form of wealth, and large holdings often belonged toabsentee landlords who lived in nearby cities. Many peasants were poor and landless and worked as tenants for the absentee landlords or for richer peasants.

For several centuries one of China’s most serious problems has been the rapid growth of the population, which tended to match any increases in food production. This became especially serious after 1800, partly because the supply of farmland grew slowly and partly because the practice of dividing farm holdings among all the surviving sons resulted in ever smaller units of production. Eventually many of the holdings were so small that a family could not sustain itself without going into debt. Once this happened, it was very difficult for the family to clear itself of financial obligation. Large numbers of peasants lost their land as a result. In times of famine and hardship, such families suffered the most.

As rural poverty spread during the 19th and early 20th centuries, many poor and middle peasants were attracted to political movements that promised radical changes and the breakup of large landholdings. The programs of Sun Yat-sen, Chiang Kai-shek, and the Nationalist party were intended to improve the people’s livelihood, but much of their political support came from landlords. Therefore, it was difficult for the Nationalists to promote effective and thoroughgoing land reform.

The Chinese Communist party had no such ties to landlords. At first the party attempted to focus its attention on urban workers, but it made little progress. One young Communist organizer, Mao Zedong (also Mao Tse-tung) urged that the party concentrate its efforts on the rural peasantry, and eventually this strategy proved successful. The Communists gained power in China partly because of the bad rural conditions that existed there.

When the Communist government took over in 1949, several paths to economic development and growth were available to it. The Soviet model of central direction and planning based on the development of heavy industry was one. Another was to retain central planning but to focus on agricultural development and light industry.Still another was to decentralize decision making and allow market forces to determine—in part at least—how resources were used. This last option is closest to thecapitalism of Western industrialized countries.

Almost by definition any Communist or Marxist system must include a strong element of central direction and planning. China is no different from other Communist states in this respect, and it moved quickly to develop a central planning body to direct the economy and determine the use of resources. The main planning organs are centrally directed by the State Council, the highest administrative body in the government. Under the State Council is the State Planning Commission, which directs the various ministries such as the Ministry of Agriculture and Forestry and the Ministry of Commerce.

Another important aspect of China’s economic system after 1950 was state ownership of all land and major equipment, what Marxists call the “means of production.”Initially land seized from the big landlords was given to peasant cultivators, but by 1955 all land was taken over by the state and organized into collective farms. A small fraction was later returned to the peasants as their own family plots, but there has not been any true private ownership of land in China since 1955.

Since 1950 China has followed several strategies to promote economic growth and development, but they have all been based on central planning and direction, what is called a “command” economy. However, there have been substantial variations in the amount of decision making left to individuals at the local level and in the types of incentives available to individual farmers and workers. In the early 1950s China followed the Soviet model, focusing on the development of heavy industryto the neglect of other sectors of the economy. Over the years, however, there have been shifts in the relative emphasis placed on heavy industry, light and consumer-oriented industries, and agriculture.

Some of these changes in emphasis have been tied to changes in the political orientation and thinking of leadership. In the past such shifts have often been reflected in major policy statements and associated with mass participation campaigns.

Examples of mass participation campaigns are the Great Leap Forward from 1958 to 1959 and the Four Modernizations program beginning in 1978. The Cultural Revolution was basically a political movement, though it did have far-reaching effects on the economy and on economic development.

Agriculture:-

Agriculture and rural activities are important in China for several reasons. Farming provides the food and fiber needed for the sustenance of China’s people. At the same time, about 60 percent of the people depend on agriculture or related rural activities for their livelihood. Although industry and manufacturing contribute the largest share of China’s total gross national product, agriculture is the economic way oflife followed by the bulk of the population. Agriculture, moreover, has always provided the means of employment for most new workers entering the labor force. Today, with between 12 and 16 million new workers entering the labor force annually, agriculture must continue to absorb tremendous numbers of new workers while continuing to find ways to use these workers productively.

Finally, the agricultural sector is an important potential source of investment money. If, through hard work, good management, and the application of sound, scientific farming, Chinese agriculture is productive, capital surpluses can be created and invested in other sectors ofthe economy. This could accelerate the rate of economic growth and ultimately benefit all of China’s people.

Traditional farming:-

In the thousands of years that farming has been practiced in China, the Chinese have refined and perfected their agricultural techniques. For example, they developed an elaborate system of maintaining the nutrient levels in the soil by collecting all organic wastes (including human wastes), fermenting them, and applying them to the fields. Traditional Chinese agriculture is labor intensive; that is, the emphasis is on using many workers to increase the crop yield per unit of land rather than on increasing the productivity of the individual worker. With each improvement in land management and crop production, the food supply increased, the land was able to support more people, and the population tended to rise accordingly until the pressure on the land became very great again. This cycle has haunted China throughout its history. At the same time, a rising population meant more hands to work the land and make it more productive, but the workers themselves remained in relative poverty. This situation was made worse by the Chinese system of inheritance, whereby the land was subdivided into smaller and smaller holdings in each succeeding generation. By the 16th century China’s farm sector had lagged, and the country was mired in backwardness and poverty.

Another factor that has helped to shape Chinese agriculture is a shortage of farmland, at least relative to the population. Although China has a larger land area than the United States, it has only about half as much land that is suitable for growing crops and more than four times the population. China today has less than 250 million acres (100 million hectares) of land in continuous crop production. For centuries China has struggled to expand the supply of farmland. In the 19th century the migration of Han Chinese into frontier areas in the northeastern and western parts of the country resulted in the opening up of much new land to agriculture. However, these areas are generally cold, dry, or both, and farm productivity there is low compared with the traditional farming areas in the east.

At the same time, a substantial amount of prime farmland has been lost over the years as cities grew, transportation networks expanded, and factories were established or enlarged. This loss has become critical since the late 1940s as a result of rapid urbanization and industrialization. One problem is that most of China’s cities are located in the midst of the best farming regions. Unfortunately, the new irrigation systems that have been constructed to help the farmers also result in a loss of farmland, which is taken over for dams, lakes, canals, and irrigation ditches. Since 1950 the amount of available cropland per person has declinedby half, to one-fourth acre (0.1 hectare). If China’s population continues to grow, the land reclamation projects currently under way will do no more than offset the losses of farmland around the cities.

Socialist agriculture:-

The Communist government that came to power in 1949 was determined to promote socialist agricultural methods. Initially its approach was cautious, since it needed the support and loyalty of the peasants in order to consolidate power. In the early 1950s land was taken away from the landlords and distributed among about 300 million poor peasants. In 1952 the government initiated mutual aid teams, which organized peasants into labor groups that would work together to raise production. At the same time, the government was beginning to extend its control over the peasants. Three years later, the mutual aid teams were combined into producer cooperatives, which pooled the peasants’ lands so they could be farmed collectively. In the following year, 1956, large collective farms were formally established and the state took over ownership of the land. The peasants were permitted to retain small “private plots” for their own use, but they were expected to derive their main livelihood by working together for the collective farm.

In 1958 Mao Zedong, who had become the undisputed leader of the country, initiated a mass campaign called the Great Leap Forward, with the aim of driving the peasants to produce more. At that time, the collectives were merged into large units called communes. Initially, the Great Leap Forward involved a number of new programs, such as rural industrialization, abolition of private plots, and communal eating. However, some of them proved unpopular, and food production began to decline. Perhaps most serious was the abolition of private plots, which drastically reduced pig production and thus the amount of hog manure available for fertilizer. Private plots were restored in 1962. Other aspects of the commune system were retained, and the commune remains the main unit of rural economic organization.

Communes cover from 10 to 50 square miles (25 to 130 square kilometers) and average 15,000 people. They are subdivided administratively into production brigades and production teams. Brigades often serve as administrative and planning subunits, but sometimes they have important production responsibilities as well. Production teams, the primary production units, are usually composed of 80 to 160 people charged with cultivating 20 to 95 acres (8 to 38 hectares) of land. Usually, teams are drawn from a single hamlet, and members often belong to common surname groups (clans) or are old acquaintances.

In 1978 the new post–Mao Zedong leadership group, as part of its Four Modernizations (agriculture, industry, science and technology, and defense) program, introduced a new system of farm production called the Family Production Responsibility System. This system permits individual families to contract with the collective unit, usually the production team, to lease land for farm production. The family agrees to a quota levied by the collective and pays a certain agricultural tax as well. The collective unit provides tools, draft animals, seeds, and other essentials. Any surplus the family produces beyond its quota and taxes may be kept for its own purposes. The family can decide how much of each crop to plant as long as it meets its quota.

This system has expanded rapidly, and it now covers a large percentage of all farm families. The government has acknowledged that some farmers will do better than others and that inequalities will appear. However, the government submits that, since those who are well organized and work hard will be rewarded, overall production will rise and economic growth will accelerate. The early results that could be gathered seemed to confirm this. Overall farm production rose rapidly in 1981 and 1982. Some peasant families did remarkably well and in a number of cases became almost wealthy.

Crops and livestock:-

China’s principal food crops are rice, wheat, corn, gaoliang (Chinese sorghum), millet, barley, and sunflower seeds. Of these, rice is by far the most vital. China is the world’s largest producer of rice, and rice accounts for almost half of the country’s total food-crop output. Rice, wheat, and corn together make up more than 90 percent of China’s total food grain production and occupy about 85 percent of the land under cultivation.

Grain production has risen steadily, from somewhat more than 330 million tons in 1978 to 360 million tons in 1989. There has also been a steady rise in the output of industrial crops, the most important of which are cotton, oil-bearing crops (such as peanuts and rapeseed), sugar (both cane sugar and beet sugar), tobacco, bast fiber (for cordage, matting, and similar uses), tea, and fruits.

Poultry and livestock production, though rising, remains the weakest sector of Chinese agriculture. Livestock numbers are high, but the amount of meat produced per animal is low. Thus, China has 15 percent of the world’s livestock and about 40 percent of its pigs, but it provides only 7 percent of the meat products and 15 percent of the pork.

Agricultural regions:-

In a sense, it is difficult to discuss Chinese agriculture as a whole, because the climate and physical features—and thus the kinds of crops that are cultivated—vary widely from one part of the country to another. In general, for agricultural purposes, three main physical regions can be considered: the west, the north, and the central and south. These can be further subdivided into eight distinctive physical-agricultural regions.

The Tibet-Qinghai Plateau in western China is a high, cold, dry, and extremely rugged area with a short growing season. Farmers here can usually grow only enoughwheat, barley, and potatoes and raise enough sheep, yaks, and horses to provide for the needs of their own families.

Also in western China, Inner Mongolia and Xinjiang lie beyond the Great Wall and are known for their dryness. They get less than 12 inches (300 millimeters) of precipitation and in some areas less than one inch (25 millimeters). Herding is the primary economic activity, though oasis agriculture is carried on where water is available. Crops include grain, cotton, sugar beets, and exotic fruits and melons.

In northern China the Loess Plateau lies southeast of the Great Wall and north of the Qin Ling Mountains. The loess that covers most of the area has eroded into badlands in places. This region is dry and has long, cold winters. Drought-tolerant crops such as millet and gaoliang are common. Wheat, corn, and cotton are also planted extensively, especially where irrigation water is available.

The North China Plain lies south of the Great Wall and extends from the coast to the mountains and hills to the west and south. The floodplains of the Huang He andthe Huai He are the main features. Several problems exist here. There is not enough rainfall, the winters are cold and long, and some of the soils are salty because of poor drainage. The main crops are wheat, barley, cotton, corn, gaoliang, millet, and peanuts.

The Northeast (formerly called Manchuria) suffers from extremely cold winters, a short growing season, and poor drainage on the large Northeast Plain. The fields inthis region are large, and heavy farm machinery has been used extensively. The chief crops include spring wheat, corn, millet, gaoliang, flax, and soybeans. A great deal of land reclamation has taken place in Heilongjiang Province. State farms have become the main form of agricultural organization in the land reclamation areas.

The middle and lower Yangtze River basin in central China is the country’s richest and most productive agricultural region, the “rice bowl” of China. The lowlands contain extensive areas of rich, river-borne alluvial soils. Precipitation is abundant, and the winters are mild. Rice is the main crop, but cotton, tea, and oilseeds are also important. Half of the country’s rice is produced in this region. The farming methods are very intensive and yields are high. Much of the fertile land of the middle and lower Yangtze Basin is farmed all year round.

South China includes the region south of the Yangtze Basin along China’s southern and southeastern coasts, a land of rugged hills and low mountains interspersed with river basins. Much of this region lies within the tropics. Precipitation is abundant and the growing season is long, but only 10 percent of the area is flat enough to permit row cropping. The main crops are rice, sugarcane, mulberries (grown primarily for silkworm culture), fruit, and freshwater fishes raised in ponds or rice paddies. The Zhu Jiang (Pearl River) delta plain around Canton is one of the most productive farming regions in China.

The western part of the region also contains the Sichuan Basin and extends south to include the Yunnan-Guizhou Plateau. Much of this region consists of rugged hills and mountains. Except for the Yuan (Red) River basin and the Chengdu Plain of Sichuan, it is not very productive. Two crops per year of rice is common where the terrain and soil conditions are right. Shifting cultivation of the slash-and-burn type is practiced among isolated peoples in the extreme southwest.

Forestry and Fishing:-

Despite China’s large land area, its forest resources are modest. Much of the western interior is too high or too dry to support dense forest stands. In the humid east,the forests were harvested for centuries for building material and firewood, and little or no effort was made to regenerate them. In 1949 it was estimated that about 8 percent of the total surface of the country was covered with forests. Since then, an active program of forestation has been undertaken and it is estimated that the forested area has been increased to 12 to 13 percent. In recent years about 2.5 million acres (1 million hectares) of forestland have been added annually. The goal is to have 20 percent of China in forest. By contrast, more than 30 percent of the United States is forested.

As China’s population and economy have grown, demand for wood and paper products has risen rapidly. China has been unable to meet this demand, and it seems doubtful that it will be able to do so in the foreseeable future. For example, there is a great need for railroad ties, electric utility poles, mine props, and buildingjoists. China has had to seek out substitutes, such as concrete poles or steel beams, but these are expensive. Paper products, which tend to be cheap in the UnitedStates, are costly and sometimes hard to get in China. The destruction of forests has also had an effect on watersheds, leading to soil erosion and the silting up of stream channels. This, in turn, results in flooding and raises the cost of irrigation.

China’s main forests are located in the Da Hingan (Great Khingan) and Changbai mountains of the Northeast region and in central and southeastern China. Northern conifers, larch, and birch are common trees of the Northeast. The forests of central and southeastern China are poorer, partly because they have been harvested so extensively. A variety of deciduous and evergreen species grow there, and there are also stands of eucalyptus and tropical hardwoods. Bamboo is an important forest plant, which has a variety of uses both in building construction and furniture making.

China has a long tradition of ocean and freshwater fishing and of aquaculture. Pond raising has always been important and has been increasingly emphasized to supplement coastal and inland fisheries threatened by overfishing. China is a leading producer of fish. In 1993 it produced 17.6 million tons, first among the world’s nations. More than 57 percent of the total catch was from the ocean. The remainder came from rivers, canals, lakes, and ponds.

China’s coastal zone is rich in fishes. All the coastal seas (Bo Hai Gulf, Yellow Sea, East China Sea, and South China Sea) have extensive areas of shallow water over the continental shelf. In these seas, especially the Yellow and East China, cold and warm ocean currents mix, creating an environment that is especially suitable for many species of ocean fishes, including croakers, mackerels, tuna, herring, and sharks. Several varieties of shellfish and specialties such as squid and octopus are also produced.

Fish farming on ponds and lakes in the interior of China is also important. This type of food production, called aquaculture, has a long history in some parts of the country. For example, near Canton there is an area of fishponds, mulberry orchards, and sugarcane fields. The fish are fed the leaves from the sugarcane and the waste from the silkworms, which feed on the mulberry leaves. The mud in the bottom of the fishponds is scraped up and used to fertilize the cane and the mulberry trees. In this way many of the nutrients are recycled. The fishponds produce several varieties of carp, a favorite food in southern China and Hong Kong. Although fish production averages only about 10 pounds (5 kilograms) per person each year, it is an important dietary supplement. The government has identified fishing as an important area for continued research and development.

Mining:-

The total extent of China’s mineral resources is not known, but the country has substantial reserves of many valuable and important minerals and fossil fuels. Many of these deposits have been discovered since 1950, and new ones are still being found. China is well endowed with coal, iron, tin, copper, lead, zinc, molybdenum, tungsten, mercury, antimony, magnesite, and fluorspar. It also has substantial petroleum reserves. There are some significant deficiencies, such as nickel, but generally China has one of the largest and richest stocks of minerals of any country, one that could easily support a modern industrial state.

Important Mined Products:-

Coal is found in great abundance. China has extracted more than 1 billion tons annually in recent years, making it the world’s leading producer. Coal is mined throughout China, though the main production is concentrated in Shanxi, Hebei, and Liaoning provinces in the north and northeast. Both open-pit and underground mining are practiced. Coal is the chief energy resource of the country. In many local areas it is the main material used to produce fertilizers. The government plans to continue expansion of coal production.

Iron and steel manufacturing are major industries in China. There are extensive iron-ore deposits, as well as the coal and limestone needed for steel production. Much of the iron ore is concentrated in the Northeast, the traditional center of the heavy metals industry. Mining of all types of minerals is expanding rapidly. Such minerals as tungsten, aluminum, titanium, and copper have export possibilities.

Petroleum:-

For many years it was believed that China lacked significant petroleum reserves. Production before 1950 was small, and most petroleum products were imported. After 1952 a good deal of effort was spent on petroleum exploration. Extensive deposits and promising sites were located. The main production centers are in the North China Plain and in the Northeast, in Heilongjiang Province at Daqing.

Oil production rose steadily during the 1960s and 1970s but tapered off in 1979 and 1980 at about 779 million barrels yearly. By 1992 China was producing more than 1 billion barrels yearly. Since the mid-1970s China has ranked as one of the ten largest oil-producing countries in the world. A small quantity of this output has been exported to earn foreign currency. Altogether, China’s fossil fuel outlook is promising. China should be able to meet its own energy needs and provide a surplus for export.

China has also developed its enormous hydroelectric potential so that a larger share of its domestic demand for electric power can be met with renewable hydropower. Renewable hydropower is tapped from moving water such as waterfalls and fast-moving streams.

Manufacturing:-

Before the introduction of Western technology in the 19th century, China had a long tradition of local industry going back almost 2,000 years. During that period the Chinese developed many technical innovations. From an early date they produced paper, gunpowder, and silk and printed from movable type. The tradition of making fine porcelain dates at least from the T’ang Dynasty. The production of luxury goods, fine handicrafts, and metalcrafting as well as the manufacture of tools were all well-established industries long before the arrival of Western entrepreneurs and engineers.

In the 19th century European industrial technology was introduced into China. New factories and manufacturing enterprises were established in the so-called treaty port cities, where the Western nations had obtained certain rights. Shanghai became an industrial center, as did some cities along major rivers like the Yangtze. During the 20th century the Northeast region developed rapidly as a center for coal and iron-ore production and the heavy metal and machine-building industries. The Soviets and Japanese, who controlled the area at various times, both invested heavily in the region’s transportation and industry. It became the most industrialized part of the country. Other cities that developed into important industrial centers were Tianjin and Qingdao.

One of the first goals of the Communists after 1949 was to promote the growth of heavy industry, following the model of the Soviet Union. In doing this, they attempted to encourage industrial development in the interior and to avoid concentrating more wealth in the old treaty port cities. New steel mills were constructed at Wuhan on the Yangtze and at Baotou in Inner Mongolia. Other interior cities, such as Zhenzghou, Xi’an, Lanzhou, Ürümqi, Taiyuan, Beijing, and Shijiazhuang, also grew rapidly. At the same time, large coastal cities like Shanghai, Canton, Tianjin, and Lüda continued to attract industries that wished to take advantage of their good transport systems and physical facilities. These cities also provided a skilled labor force and access to international markets.

The whole range of industrial goods is produced in China today, though many consumer products remain in short supply. The output of China’s factories extends from textiles to railway locomotives, jet planes, and computers. China is the world’s largest producer of inexpensive cotton textiles and exports large quantities of textiles and garments. Food processing is important, and many agricultural goods are exported. China is also among the world’s leaders in cement production. Iron-and steelmaking has declined, production having dropped somewhat to about 44 million tons annually. Other industrial products include television sets, bicycles, cars, trucks, and washing machines, though in quality and technical level they lag behind those made in Japan, the United States, and the European countries. The processing and manufacture of chemicals, including fertilizers, petroleum products, and pharmaceuticals, is another large and expanding segment of Chinese industry.

During the 1970s and 1980s China began to develop joint ventures with foreign manufacturers. The foreign concerns provided the technology, capital, and expertise,while China provided the materials, plant location, facilities, and labor. These joint ventures are concentrated in major cities and in special zones along the southeastern coast and are often associated with the production of goods for export.

Another aspect of China’s push to industrialization has been the growth of rural industries, especially after 1960. Rural industrialization associated with five industries (farm machines, chemical fertilizer, cement, iron, and coal) was promoted vigorously during the 1960s and early 1970s. The aim was to produce manufactured goods locally where transportation and distribution systems were poor. The program achieved some success, but the quality of the goods was often low, and the costs of production were high because of the small scale. Eventually, China may abandon this type of production as the economies of large-scale production become more apparent and as transport systems improve. Meanwhile, local industries such as brickmaking and the production of small farm tools and equipment continue to fill an important need in China’s farm economy.

Distribution and Trade:-

Trade in China is carried on at several levels. Within localities and regions, goods and money are exchanged to satisfy local needs and to meet government quotas. At the national level, goods are moved to meet the needs and demands of the overall economy. Internationally, China buys scarce goods and commodities to meet critical needs and sells goods that it can market at competitive prices.

During dynastic times, trade beyond the local level was mostly in luxury goods or in food grains during times of shortage. Trade was restricted because China’s transportation system was poor and the costs of shipping and distribution were high. Since 1949 China’s international trade policy has fluctuated, and its trading partners have changed. Initially, the Communist government traded mainly with the Soviet Union and other Communist-bloc countries and also provided Hong Kong with fresh food. Later, when China’s relations with the Soviet Union became less friendly, there was less emphasis on trade with other Communist countries. Japan,Hong Kong, West Germany, Australia, and Canada became increasingly important as trading partners. Trade with the United States rose dramatically after PresidentRichard Nixon visited China in 1972. By the early 1990s the United States accounted for about 11 percent of China’s total foreign trade. China’s foreign trade as a whole grew from $4.8 billion in 1971 to $166 billion in 1992.

China exports both agricultural commodities and goods (about one third of total exports) and manufactured goods (about half), as well as mineral products such as oil and coal. Foodstuffs account for about 6 percent of total imports and industrial supplies and materials such as crude steel and chemicals for about 50 percent. The remainder consists chiefly of expensive capital goods such as machinery, precision instruments, and transportation equipment. As China has sought to modernize its economy, foreign trade has been used to bring in new equipment and technologies as well as to meet scarcities in the domestic economy. Exports have been used to produce foreign earnings to pay for the imports. The Chinese have sought to maintain an even balance of trade so they can pay for imports rather than buying on credit.

Transportation:-

China’s transportation system has always been poor. Moving people and goods has been a slow, expensive, and sometimes dangerous process. Historically, the only convenient and relatively inexpensive transportation arteries have been a few large, deep rivers, such as the Yangtze, Songhua, Amur, and Xi, and the well-traveled barge canals such as the Grand Canal, a series of waterways linking Hangzhou andBeijing. Even on these waterways travel was slow, and the conditions were sometimes difficult or hazardous. Nevertheless, the river and canal system provided the best means of transportation before the 20th century, and China’s waterways still carry about 44 percent of the country’s total freight traffic.

Railways:-

Railway construction began in China late in the 19th century, and the first line, between Shanghai and Peking (Beijing), was opened in 1903. By World War II more than 15,500 miles (25,000 kilometers) of track had been built, primarily in the eastern and northeastern parts of the country. Much of the network was destroyed during the war, but rail construction began anew after 1949 and has continued ever since. By 1993 China had an estimated 43,131 miles (69,412 kilometers) of railroads. (By comparison, the United States had about three times as much trackage in that year.) By 1983 every province-level administrative unit except Tibet was served by rail, and plans were being made to extend a line south from the Lanzhou-Ürümqi line to Lhasa, in Tibet. Railways have become the most important form oftransportation in China. For example, more than 50 percent of the country’s traffic is moved by the railroad system.

China’s rail network consists of a series of north-south trunk lines, crossed by a few major east-west lines. Most of the large cities are served by these trunk lines, but there are few spur or feeder lines, and the density of the network is low. Compared with India, which has 38,000 miles (61,000 kilometers) of railways, China hasonly about 10 percent more track to serve about three times the area. Many of the trunk lines cannot meet the demand for service. The sixth five-year plan (1981 to 1985) called for continued large investment in railways. The investment was used to improve the capacity of existing lines through double tracking or electrification, and to construct short lines where the government decided there was a crucial need for service.

Roads and highways:-

Although it has been in use for many centuries, the road and path network in China has always been poor. Goods and people were carried in various ways. Conditions were bad, and travel was slow and costly. Not until the introduction of automobiles and trucks in the 20th century was there much improvement.

The road and highway system expanded rapidly after World War II, but by Western standards it is still primitive. The network of all-weather roads and highways is not a unified national system with consistent standards, and many of the roads are poor. There are also gaps and bottlenecks. For example, until 1957 there was no bridge over the Yantgze River, and by the early 1980s there were only three.

Despite its shortcomings, the road network is probably adequate to meet current needs. China has only a small number of cars, trucks, and buses as compared with the United States or Japan. In the early 1990s there were only about 7 million motor vehicles, two thirds of which were trucks and buses. China produces only about 200,000 trucks annually and very few automobiles. An increasing number of cars are owned privately. The highway network accounts for only about 2 percent of total freight traffic. Planning for major changes has not received high priority.

Air transportation:-

Civil air transportation in China dates from World War II and the efforts of Claire Chennault, then a retired United States colonel, to build a Chinese air force. After 1949 the new government set up the General Administration of Civil Aviation of China (GACAC), which has continued to serve as the nation’s domestic and international air carrier. Most major cities are served by domestic flights, and a few large cities like Canton, Shanghai, and Beijing have international service. GACAC planes fly to Europe, Japan, the United States, and South Asia. Some provincial and urban authorities operate intercity airlines that carry passengers and freight.

Shipping:-

Ocean shipping has grown rapidly since 1970. By 1980 China’s merchant fleet was large enough to carry about three quarters of China’s merchandise trade that moved by sea. In addition, China controlled another fleet of merchant ships registered in Hong Kong. China also has a domestic fleet serving inland and coastal waters.

China builds most of its own ships, some of which are exported. For example, many of the containerships (as well as containers) being built are for export. The government plans to continue expanding the country’s shipping capacity.

Despite large investments in railroad and highway construction, transportation continues to be a bottleneck slowing economic growth. Most people travel little and donot have access to the rail or highway system for other than very short trips. More than 90 percent of the freight in China moves by rail or water, and this seemed unlikely to change before the end of the century. This situation has produced significant variations in regional economic growth.

Communication:-

Considerable effort has been expended on the postal and telecommunications systems in China since 1949, but they are still far from meeting Western standards of speed and efficiency. Between 1949 and 1979 the total length of mail delivery routes was expanded almost sevenfold. However, there is a shortage of modern postal equipment, and most sorting is still done by hand. The bulk of the mail is carried by the nation’s railroad.

As is the case with transportation, the telecommunications system is insufficient to meet the needs of a growing economy. Telephone and short-wave radio provide the basis of the national communications system. China has about 5.9 telephones per 1,000 people, compared with 769 per 1,000 people in the United States. As of 1994 there were 206 million radios and as of 1986 more than 228 million television sets in China, many fewer per person than in most of the heavily industrializedcountries.

Government:-

The government of the People’s Republic of China is highly centralized and operates in a top-down manner. This means that in many cases, decisions and laws that are not explicitly delegated to local governments are dictated by the state.

The Communist Party:-

The Chinese Communist party is the primary political force in China. Unlike parties in Western democracies, it is a tightly organized movement that controls and leads society at all levels. The party sets policy and controls its execution through government officials who are also party members. The effect is to make the government an organ of the party.

At the time of its founding in 1921, the Chinese Communist party focused on organizing urban workers, but it achieved only limited success in this effort. Orthodox Marxism expected the Communist Revolution to begin among industrial workers. However, Karl Marx had developed his theories based upon highly industrialized economies, and the industrial sector in China was small and relatively primitive. It was Mao Zedong who adapted Marxist theory to the conditions of an underdeveloped, primarily agricultural society (see Mao Zedong). Although Mao’s successors downgraded some of his more radical ideas, Marxism-Leninism-Mao Thought—Marxism as it was interpreted by Mao—is still officially designated as the guiding philosophy that is behind both the party and the government.

The Chinese Communist party is organized as a hierarchy, with power concentrated at the top. Above the local units, or cells, is a pyramid-like structure of party congresses and committees at various levels, culminating in the National Party Congress. The national congress is supposed to meet every five years, though this has not always been the case. When it is not in session, direction of the party is in the hands of a Central Committee of about 200 members, which is elected by the congress. The Central Committee, in turn, elects the Political Bureau, which in 1992 consisted of 19 members. It is within the Political Bureau and its elite Standing Committee that power is concentrated and the highest level decisions of state are made. There is also a secretariat that carries on the day-to-day business of the party.

Prior to 1982, the highest party office was that of chairman, held for more than 25 years, through most of the People’s Republic’s history to that time, by Mao Zedong. In an effort to ensure that the power Mao had enjoyed was never again concentrated in one person, a new party constitution adopted in 1982 abolished the chairmanship and replaced it with the administrative position of general secretary to the Secretariat. The constitution also established a body called the Central Advisory Commission to assist and advise the Central Committee. One of the objects of the commission was to encourage elderly party leaders to continue to be active in various functions of the Communist party. The commission became an obstacle to reform and was abolished in 1992.

Theoretically, party membership is open to anyone over 18 who accepts the party program and is willing to work actively in one of its organizations. Members are expected to abide by the party’s discipline and to serve as model workers. The backbone of the party consists of full-time paid workers known as cadres (Chinese, ganbu). The term cadre is also used for public officials holding responsible positions who may or may not be members of the party.

The National Government:-

The People’s Republic was first governed according to the ‘Common Program’ and organic laws adopted in 1949. Four constitutions followed, each reflecting shifts in policy and the balance of power among factions of the top leadership. The 1982 constitution was designed to solidify the position of the leadership after Mao.

Like the party, the government structure forms a pyramid, ranging from local units such as residents’ (urban) and villagers’ committees through counties and prefectures to the 21 provinces, five autonomous regions, and three special status municipalities (Beijing, Shanghai, and Tianjin), each with its people’s congress and administrative organs. At the top of the government structure is the national government in Beijing.

Legislative authority is vested in the National People’s Congress, and the Standing Committee of the Congress exercises its functions between sessions. The highest administrative organ is the State Council (similar to the United States Cabinet), headed by the premier. The 1975 constitution abolished the post of president(chairman of the republic), and for a time the chairman of the Standing Committee served as nominal head of state. The presidency was reinstated by the constitution of 1982.

The court system parallels the administrative system. However, the Chinese have traditionally tended to resolve conflicts through social rather than legal or judicial mediation, and the rule of law as it is known in Western countries is not well established. There are few lawyers, and legal methods are not familiar to most Chinese.

International Relations:-

The People’s Republic has undergone several shifts in foreign policy since 1949. Initially, it was closely tied to the Soviet Union and firmly identified as a member of the socialist camp.

Within a few years, however, the Sino-Soviet relationship had begun to deteriorate, the victim, among other factors, of differing national interests, differing interpretations of Marxism, and Chinese resentment over heavy-handed Soviet attempts at control. By the mid-1960s China and the Soviet Union had become openlyhostile toward each other.

China was largely isolated from the rest of the world during the height of the Cultural Revolution, but when the upheavals subsided it began to take a more practical foreign policy line. Trade was opened up with a number of Western countries, China started to play an active role in international organizations, and diplomatic relations were established with countries willing to recognize the People’s Republic—rather than the Nationalist government on Taiwan—as the government of China. Most dramatically, contacts were begun with the United States, leading to full diplomatic recognition on Jan. 1, 1979.

While China’s political system changed little by the 1990s, its economy had become the fastest-growing in the world. Relations with the United States became unstable on two fronts. The Chinese government refused to allow the human rights concerns to become an issue in trade talks. Trade itself became a major issue, as exports to the United States exceeded imports. In addition, North Korea’s probable possession of nuclear weapons posed an unsettling problem for China and the United States in the mid-1990s.

History:-

With more than 4,000 years of recorded history, China is one of the few modern countries that also flourished economically and culturally in the earliest stages of world civilization. Indeed, despite the political and social upheavals that frequently ravaged the country, China is unique among nations in its longevity and resilience.

Beginnings and Early History:-

Archaeological evidence suggests that China is one of the cradles of the human race. The earliest known human in China, whose fossilized skull was unearthed in Shanxi Province in 1963, is believed to date back to 600,000 BC. The remains of Sinanthropus pekinensis, known as Peking Man and dating back to 400,000 BC, were excavated in 1923 at Zhoukoudianzhen near Peking. Peking Man was closely related to Pithecanthropus of Java and lived during the Old Stone Age. In the upper caves of Zhoukoudianzhen are found artifacts of a late Old Stone Age man (50,000–35,000 BC), who ranks in age with the Cro-Magnon of Europe. This was an early form of Homo sapiens, or modern man, who made tools out of bones as well as stones, made clothes out of animal hides, and knew how to make fire.Around the 4th or 3rd millennium BC, in the New Stone Age, great changes occurred in the lives of the ancient Chinese. Larger numbers of people began living together at settled places, cultivating land, and domesticating animals. These people made polished stone tools and built shelters in pit dwellings and beehive huts that were covered with reed roofs. Such villages were found mostly in the area of the great bend of the Huang He on the North China Plain. Despite its severe winters, this areawas well suited to agriculture. In fact, it closely resembled the other cradles of ancient civilizations, such as the valley of the Nile in Egypt.

The people of this period (3000–2000 BC) also developed the art of making pottery for storing food and drink. Two distinct types have been discovered: red clay pots with swirling black designs in the northwest near Yangshao village, and smooth black pottery in northeast China near Lungshan, a site in Shandong Province.

The Shang Dynasty (1766–1122 BC):-

Before the Shang, Chinese tradition mentions a Hsia Dynasty, but for lack of evidence, the Hsia is still considered a legendary period. Until the late 1920s the Shang Dynasty too was thought to be legendary but discoveries made near the modern city of Anyang (the site of the Shang capital) in Henan Province proved that the dynasty existed. The most important of these discoveries was the finding of over 100,000 bones and shells with still-recognizable characters inscribed on them. These oracle bones and shells, originally used as religious objects, represent the earliest form of the Chinese writing system. In addition to the oracle bones and shells, the superb Shang bronzes and the tombs of the Shang rulers reveal a highly developed society.

The Shang are distinguished from the New Stone Age people by their settled life-style and their highly developed bronze-making technique. The Shang used bronze to make weapons, daily tools, and elaborately decorated sacrificial vessels.

The last Shang ruler was reportedly evil and tyrannical. He was overthrown by a revolt of the people, who were aided by the neighboring Chou people. The leader of the Chou was named Wu. With his brother’s help, he defeated the Shang and founded the Chou Dynasty.

The Chou Dynasty (1122–221 BC):-

The Chou conquest of the Shang was given an important meaning by later moralistic interpretations of the event. The Chou kings, whose chief deity was heaven, called themselves “Sons of Heaven,” and their success in overcoming the Shang was seen as the “mandate of heaven.” From this time on, Chinese rulers were called “Sons of Heaven” and the Chinese Empire, the “Celestial Empire.” The transfer of power from one dynasty to the next was based on the mandate of heaven.Chou rule in China continued for nearly nine centuries. During that time great advances were made. The long period of the Chou Dynasty is divided into two subperiods: Western (Early) and Eastern (Later) Chou, named for the locations of the capitals.

Western (Early) Chou (1122–771 BC):-

Western Chou territory covered most of the North China Plain. It was divided into about 200 princely domains. The Chou political system was similar to the feudal system of medieval Europe.

The Chou people combined hunting and agriculture for a living. Associating the success or failure of crops with the disposition of nature, the people prayed to numerous nature gods for good harvests. One of the ruler’s duties was to placate heaven and Earth for all people. Failure to do so deprived him of the right to rule. Such beliefs are still widely held today among the Chinese people. Ancestor worship also developed during the Chou period and has been important in East Asia forthe last 2,000 years.

The Chou were invaded in 771 BC by a less cultured, more militaristic people from the northwest. The capital was moved east to Luoyang. From this point on, the dates are considered reliable. The manner in which the Western Chou fell followed a pattern that was repeated throughout Chinese history. People who led a nomadic, or wandering, life in the northern steppe land would invade settled agricultural communities to solve periodic food shortages.

The conflict between the nomads and settled farmers has been a continuing feature of Chinese history. Settled Chinese called the nomads “barbarians,” a term applied to all peoples of non-Chinese culture up to the 20th century. From this concept an idea developed that China was the center of the civilized world, hence the traditional name “Middle Kingdom/Country,” referring to China.

Eastern (Later) Chou (771–221 BC):-

The Eastern Chou is also two periods. The first is Ch’un Ch’iu, the Spring and Autumn period (771–481 BC), named for a book credited to Confucius. The second is Chan-kuo, the Warring States period (481–221 BC).

In the Spring and Autumn period, iron replaced bronze for tools and weapons. The use of iron led to an increase in agricultural output, growth of the population, and warfare among the states. By the 4th century BC the number of states had shrunk to seven. In 256 BC the princes of those states assumed the title of king, stopped paying homage to the Chou king, and continued to fight for supremacy. The strongest of the seven states was Ch’in.

The disruption caused by this prolonged warfare had a number of long-range consequences. One was the rise of a new social group, the scholars (shi). They were forerunners of the scholar-officials of the Chinese Empire, who became the most influential group in China. In the Later Chou period, however, they were a relatively small group of learned people. Often wandering from state to state in search of permanent employment, the shi worked as tutors to the children of feudal princes and as advisers to various state governments. The most famous of these scholarly shi was Confucius.

Age of philosophies:-

Confucius is a latinized form of the honorific title K’ung-fu-tzu (Master K’ung), given to a wandering scholar from the state of Lu in Shandong Province in northeastern China. Although little known in his lifetime, Confucius was revered as the greatest of sages throughout most of China’s history. His teaching, Confucianism, was the state teaching from the beginning of the Han Dynasty in 202 BC to the end of the imperial period in 1911.

Disturbed by constant warfare among the states, Confucius taught that most of the ills of society happened because people forgot their stations in life and rulers lostvirtue. He advocated a return to the golden antiquity of the emperors Yao and Shun, when rulers were virtuous and people knew their places. Therefore, Confucius’ primary concern lay in social relations, proper conduct, and social harmony. Confucius defined five cardinal relationships: between ruler and ruled, between husband and wife, between parents and children, between older and younger brothers, and between friends. Except for the last case, all of the defined relationships are between superiors and inferiors. He emphasized the complete obedience and loyalty of the inferior to the superior but also mentioned the benevolence of the superior to the inferior. The ideal Confucian family was an extended one of three or four generations, in which authority rested with the elderly male members. Filial piety (obedience to parents) was one of the most important virtues emphasized by later Confucians.

Confucius reportedly spent his last years editing and completing some of the books that came to be known as Five Classics. These include the ‘Classic of Poetry’, ‘Classic of History’, ‘Spring and Autumn Annals’, ‘Record of Rites’, and ‘Classic of Changes’, or ‘I Ching’. Memorized by scholars for generations in China, these books and four other works, including the ‘Analects’, a compilation of Confucian teachings, were the subjects of civil service examinations for over 2,000 years.

Confucianism commanded a greater following some 200 years later, during the time of Mencius, or Meng-tzu (371–289 BC). He was second only to Confucius himself in shaping Confucianism. His three main tenets were the basic good nature of human beings, the notion of society with a distinct distribution of functions, and the ruler’s obligation to the people. On the last point, Mencius elaborated on the concept of the mandate of heaven, which allows that rulers lose support of heaven when they cease to be virtuous. The concept served as the basis of revolts in China and the succession of new rulers.

Two other philosophies that have had an enduring influence on Chinese thought are Taoism and Legalism. Taoism gave the Chinese an alternative to Confucianism—passivity and escape to nature—while Legalism provided the Chinese state with one of its basic doctrines.

The Ch’in Empire (221–206 BC):-

After nearly 900 years, the Chou Dynasty came to an end when the state of Ch’in, the strongest of the seven surviving states, unified China and established the first empire in 221 BC. The Ch’in empire did not last long, but it left two enduring legacies: the name China and the idea and structure of the empire. This heritage outlasted the Ch’in Dynasty itself by more than 2,000 years.

The first Ch’in emperor was called Ch’in Shih Huang Ti. The title of emperor was used for the first time in Chinese history to set the Ch’in ruler apart—as the ruler of the unified land—from the kings, the heads of the earlier, smaller states. The construction of massive palaces and the ceremony of the court further enhanced the power of the emperor by inspiring awe in the people.

A centralized bureaucracy replaced the old feudal system. The empire was divided into provinces and counties, which were governed by centrally appointed governors and magistrates. The former ruling families who had inherited their places in the aristocracy were uprooted and forced to live in the capital of Xianyang. Other centralizing policies included census taking and standardization of the writing system and weights and measures.

The Ch’in army conducted massive military campaigns to complete the unification of the empire and expand its territory. The Ch’in empire stretched from the Mongolian plateau in the north to Vietnam in the south. As with rulers before and after him, the first emperor was preoccupied with defending his territory against northern nomads. After waging several successful campaigns, the emperor ordered the building of the wall of “ten thousand li” (a li is a Chinese unit of distance) to protect the empire. This task involved connecting the separate walls that were built by former northern states to form the famous Great Wall. The Ten Thousand Li Wall, as it is known in China, is 1,500 miles (2,400 kilometers) long, from 15 to 50 feet (5 to 15 meters) high, and from 15 to 25 feet (5 to 8 meters) wide. Although closely linked with the first ruler of the Ch’in Empire, the wall as it stands today dates mainly from the later Ming Dynasty.

Ch’in Shih Huang Ti’s harsh rule provoked much opposition. The emperor feared the scholars most. He had them rounded up and put them to death or sent them into exile. Many went into hiding. Moreover, all books, except technical ones, were confiscated and burned. In the last years of his life, Ch’in Shih Huang Ti became fearful of threats on his life and lived in complete secrecy. He also became obsessed with obtaining immortality. He died in 210 BC in Shandong Province, far from the capital of Xianyang, during one of his long quests to find the elixir of life.

The Ch’in empire disintegrated rapidly after the death of the first emperor. The legitimate heir was killed in a palace intrigue, and a less able prince was put on the throne. Conditions worsened throughout the empire. In 209 BC, rebellions erupted all over China. Two men had the largest following. Hsiang Yü was a general of aristocratic background; Liu Pang was a minor official from a peasant family. By 206 BC rebels had subdued the Ch’in army and destroyed the capital. The struggle between Hsiang Yü and Liu Pang continued for the next four years, however, until Liu Pang emerged as the victor in 202 BC. Taking the title of Kao Tsu, High Progenitor, he established the Han Dynasty.

The Han Empire (202 BC–AD 220):-

The four-century-long Han rule is divided into two periods: the Earlier or Western Han and the Later or Eastern Han. In between these two was the short-lived Hsin Dynasty (AD 9–23).

Earlier (Western) Han (202 BC–AD 9):-

The Han Kao Tsu preserved many features of the Ch’in imperial system, such as the administrative division of the country and the central bureaucracy. But the Han rulers lifted the Ch’in ban on philosophical and historical writings. Han Kao Tsu called for the services of men of talent, not only to restore the destroyed classics but to serve as officials in the government. From that time, the Chinese Empire was governed by a body of officials theoretically selected on merit. Such a practice has few parallels elsewhere at this early date in human history.

In 124 BC, during the reign of Wu Ti (140–87, the Martial Emperor), an imperial university was set up for the study of Confucian classics. The university recruited talented students, and the state supported them. Starting with 50 when the university first opened, the number of government-supported students reached 30,000 by the end of the Han Dynasty. Emperor Wu also established Confucianism as the official doctrine of the state. This designation lasted until the end of the Chinese Empire.

The Early Han faced two major difficulties: invasions by the barbarian Huns and the influence of the imperial consort families. In the Han Dynasty, the Huns (known as Hsiung-nu by the Chinese) threatened the expanding Chinese Empire from the north. Starting in Wu Ti’s reign, costly, almost century-long campaigns had to be carried out to establish Chinese sovereignty along the northern and northwestern borders. Wu Ti also waged aggressive campaigns to incorporate northern Korea in 108 BC and northern Annam in 111 BC into the Han empire. The Early Han’s other difficulty started soon after the first emperor’s death. The widowed Empress Lü dominated politics and almost succeeded in taking the throne for her family. Thereafter, families of the empresses exerted great political influence. In AD 9 Wang Mang, a nephew of the empress, seized the throne and founded a new dynasty of Hsin.

Wang Mang’s overambitious reform program alienated him from the landlords. At the same time the peasants, disappointed with Wang’s inability to push through the reform, rose in rebellion. In AD 17 a rebel group in Shandong painted their faces red (hence their name, Red Eyebrows) and adopted religious symbols, a practice later repeated by peasants who rebelled in times of extreme difficulty. Wang Mang’s force was defeated, and he was killed in AD 23.

Later (Eastern) Han (AD 23–220):-

The new ruler who restored peace and order was a member of the house of Han, the original Liu family. His title was Kuang Wu Ti, “Shining Martial Emperor,” from AD 25 to 57. During the Later Han, which lasted another 200 years, a concerted but unsuccessful effort was made to restore the glory of the former Han. The Later Han scored considerable success in recovering lost territories, however. Sent to befriend the tribes on the northwestern frontier in AD 73, a great diplomat-general, Pan Ch’ao, eventually led an army of 70,000 almost to the borders of eastern Europe. Pan Ch’ao returned to China in 101 and brought back information about the Roman Empire. The Romans also knew about China, but they thought of it only as the land where silk was produced.

The Later Han period was particularly plagued with evils caused by eunuchs, castrated males recruited from the lower classes to serve as bodyguards for the imperial harem. Coming from uneducated and poor backgrounds, they were ruthlessly ambitious once they were placed within reach of power. Toward the end of the Later Han, power struggles between the eunuchs and the landlord-officials were prolonged and destructive. Peasant rebellions of the Taoist-leaning Yellow Turbans in 184 and the Five Pecks of Rice in 190 led to the rise of generals who massacred over 2,000 eunuchs, destroyed the capital, and one after another became dictators. By 207 General Ts’ao Ts’ao had emerged as dictator in the north. When he died in 220 his son removed the powerless emperor and established the kingdom of Wei. The Eastern Han came to an end, and the empire was divided into the three kingdoms of Wei, Shu Han, and Wu. The pattern of the rise and fall of Han was to be repeated in later periods. This characteristic came to be known as the dynastic cycle.

Han culture:-

The Chinese show their pride in Han accomplishments by calling themselves the Han people. Philosophies and institutions that began in the Chou and Ch’in periods reached maturity under the Han. During Han times, the Chinese distinguished themselves in making scientific discoveries, many of which were not known to Westerners until centuries later. The Chinese were most advanced in astronomy. They invented sundials and water clocks, divided the day equally into ten and then into 12 periods, devised the lunar calendar that continued to be used until 1912, and recorded sunspots regularly. In mathematics, the Chinese were the first to use the place value system, whereby the value of a component of a number is indicated by its placement. Other innovations were of a more practical nature: wheelbarrows, locks to control water levels in streams and canals, and compasses.

The Han Chinese were especially distinguished in the field of art. The famous sculpture of the “Han flying horse” and the carving of the jade burial suit found in Han period tombs are only two superb examples. The technique of making lacquer ware was also highly developed.

The Chinese are proudest of the tradition of historical writing that began in the Han period. Ssu-ma Ch’ien (145?–85? BC) was grand historian (an office that combined the duties of court recorder and astronomer) during the time of Wu Ti. His ‘Historical Records’, which took ten years to complete, established the pattern and style followed by subsequent histories. In the Later Han, the historical tradition was continued by the Pan family. Pan Piao, the father, started to bring Ssu-ma Ch’ien’s ‘Records’ up to date. The work was continued by his son Pan Ku (twin brother of the general Pan Ch’ao) and was completed by his daughter Pan Chao, China’s earliest and most famous woman scholar. Unlike Ssu-ma Ch’ien, the Pan family limited their work to 230 years of the Early Han. This was the first of the dynastic histories, subsequently written for every dynasty. Pan Chao also wrote a highly influential work on the education of women, ‘Lessons for Women’. ‘Lessons’ emphasized the “virtues” of women, which restricted women’s activities.

The Confucianism that the Han Dynasty restored differed from the original teachings of Confucius. The leading Han philosophers, Tung Chung-shu and others, used principles derived from the early Chinese philosophy of nature to interpret the ancient texts. The Chinese philosophy of nature explained the workings of the universe by the alternating forces of yin and yang—dark and light—and the five elements: earth, wood, metal, fire, and water. The Han period was marked by a broad eclecticism. Many Han emperors favored Taoism, especially the Taoist idea of immortality.

The Period of Disunity (220–581):-

After the fall of the Later Han, the Chinese Empire remained divided for three and a half centuries. The first half-century began with the domination of the Three Kingdoms: Wei under the Ts’ao family in the north, Shu Han under Liu Pei in the southwest, and Wu under Sun Ch’üan in the southeast. Invaders from the north soon overran the kingdoms and set up their own states, but the Northern Wei Dynasty (386–534), established by one of the barbarian tribes, the Toba, was the only one to last. Four dynasties established by the Chinese ruled in the south during the 4th and 5th centuries. The Three Kingdoms period was made famous by the novel ‘Romance of the Three Kingdoms’, which glamorized the period as an age of chivalry.

Although Buddhism first entered China from India during the Later Han, in the time of Han Ming Ti (AD 58–76), it did not become popular until the end of the 3rd century. The prevailing disorders, aggravated by barbarian invasions and the flight of northern Chinese to the south, heightened the attraction of Buddhism with its promise of personal salvation, despite its lack of affinity with the society-oriented thought of the Chinese. Buddhism was founded by Siddhartha Gautama, the Buddha, a prince of the Sakya kingdom on the borders of what are now India and Nepal and a contemporary of Confucius. Intent on finding relief for human suffering,he received a moment of enlightenment while meditating under a Bo tree. The Buddha taught that desires are the source of pain, and that by overcoming desires, pain can be eliminated. To this end, he advocated meditation and pursuing the Eightfold Path, similar to the Ten Commandments of Judaism and Christianity. The objective was to reach Nirvana, the condition of serenity of spirit, where all cravings, strife, and pain have been overcome, giving way to a merging of the spirit with eternal harmony.

At an early stage of its development, Buddhism split into two major trends, Mahayana (Greater Vehicle) and Hinayana (Lesser Vehicle). Hinayana remained closer to the original Buddhism and is still the religion of the Southeast Asian countries. The Buddhism of China, Korea, Japan, Nepal, Tibet, and Vietnam, however, stems largely from Mahayana. Mahayana Buddhism contained more popular elements, such as belief in repetitive prayers, heaven and deities—bodhisattvas—who would help people gain salvation. It also readily adapted to the land and people it converted. In China, it split into several schools, including Ch’an (Zen in Japan), T’ien-t’ai (Tendai in Japan), and Pure Land.

Reunification and Expansion:-

The Sui dynasty, though relatively short in timespan, reunified China after nearly four centuries of political fragmentation, during which the north and south developed in different ways. The T’ang Dynasty, which succeeded the Sui period, developed a successful form of government and administration and stimulated a cultural and artistic flowering that amounted to a golden age.

The Sui Dynasty (581–618):-

The prolonged period of disunity finally ended when a general from the northwest united China by establishing the new dynasty of Sui. A second great period of imperial unity was begun. The relationship of the Sui to the succeeding T’ang Dynasty was much like that of the Ch’in to the Han. It served as the unifying foundation on which its successor could build. The first Sui emperor, Wen Ti, introduced a series of economic reforms, such as reduction of the peasants’ taxes, a careful census for equitable tax collection, and restoration of the equal allocation system used in the Northern Wei. Every taxable male received a grant of land, part of which was returnable when he ceased to be a taxpayer at age 60 and part of which he could pass on to his heirs. He also revived the Han system of examinations based on Confucian classics.

Sui Wen Ti’s premature death might have been caused by his ambitious son Yang Ti, whose grandiose projects and military campaigns ultimately led to the Sui’s downfall. Some of his projects were productive, especially the construction of the Grand Canal, which linked up the Huang, Huai, and Yangtze rivers and connected north and south China.

Yang Ti’s overly ambitious scheme of expanding his empire led to disastrous wars against Korea. After a series of futile expeditions, the Chinese army of over a million was defeated and forced to flee. In 618, Yang Ti was assassinated in an army coup; one of the coup leaders, Li Shih-min, installed his father as emperor, founding the T’ang Dynasty. After about a decade, during which he was able to secure his father’s abdication, he took the throne himself in 626 as the emperor T’ai Tsung.

The T’ang Dynasty (618–907):-

The T’ang emperors set up a political system in which the emperor was supreme and government officials were selected on the bases of merit and education. The early T’ang rulers applied the equal allocation system rigorously to bring about a greater equity in taxation and to insure the flow of taxes to the government. A censuswas taken every three years to enforce the system, which also involved drafting people to do labor. These measures led to an agricultural surplus and the development of units of uniform value for the principal commodities, two of the most important prerequisites for the growth of commerce and cities.

The T’ang capital of Chang’an was one of the greatest commercial and cosmopolitan cities in the world at that time. Like most capitals of China, Chang’an was composed of three parts: the palace, the imperial city, and the outer city, separated from each other by mighty walls.

The T’ang was a period of great imperial expansion, which reached its greatest height in the first half of the 8th century. At that time, Chinese control was recognized by people from Tibet and Central Asia in the west to Mongolia, Manchuria (now the Northeast region of China), and Korea in the north and Annam in the south.

Religion:-

Confucianism was restored as the official religion, but other religions were allowed during most of the T’ang period. Religious institutions, represented by Muslim mosques, Christian churches, Buddhist temples, and others were established in Chang’an.

Buddhism flourished during the first century of T’ang rule under Empress Wu, the only woman to rule China in her own name. Buddhist monasteries received endowments of land and treasure. They became important landowners and rich agricultural communities and also acquired many other functions. The monasteries acted as sanctuaries, inns, hospitals, and places to register births and deaths. In time, they came to represent a challenge to the state and to the accepted order.

By the 9th century the sporadic imposition of restrictions by the government had turned into full-scale persecution. Financial reasons and the activities of Taoist priests competing for imperial patronage were the motivating forces. In the persecutions that took place during the 840s, over 4,000 monasteries and 40,000 shrines were destroyed, and more than 250,000 monks and nuns were defrocked by the imperial forces.

The An Lu-shan rebellion:-

Most of the T’ang accomplishments were attained during the first century of the dynasty’s rule, through the early part of Emperor Hsüan Tsung’s long reign from 712 to 756. However, late in his reign he neglected government affairs to indulge in his love of art and study. This led to the rise of viceroys, commanders responsible for military and civil affairs in the regions. An Lu-shan was a powerful viceroy commanding the northwest border area. He had both connections at the imperial court andhidden imperial ambitions. In 755 he rose in rebellion.

The emperor fled the capital with an ill-equipped army. These troops soon rebelled and forced the emperor to abdicate in favor of his son.

The new emperor raised a new army to fight the rebels. An Lu-shan was assassinated in 757, but the war dragged on until 763. Afterward, the Chinese Empire virtually disintegrated once again. The provinces remained under the control of various regional commanders. The dynasty continued to linger on for another century, but the T’ang empire never fully recovered the central authority, prosperity, and peace of its first century.

The most serious problem of the last century of T’ang was the rise of great landlords who were exempt from taxation. Unable to pay the exorbitant taxes collected twice a year after the An Lu-shan rebellion, peasants would place themselves under the protection of a landlord or become bandits. Peasant uprisings, beginning with the revolt under the leadership of Huang Ch’ao in the 870s, left much of central China in ruins.

In 881 Huang Ch’ao’s rebels, now numbering over 600,000 people, destroyed the capital, forcing the imperial court to move east to Luoyang. Another rebel leader founded a new dynasty, called Later Liang, at Kaifeng in Henan Province in 907, but he was unable to unify all China under his rule. This second period of disunity lasted only half a century. Once again, however, China was divided between north and south, with five dynasties in the north and ten kingdoms in the south.

T’ang culture:-

Buddhist influence in art, especially in sculpture, was strong during the T’ang period. Fine examples of Buddhist sculpture are preserved in rock temples, such as those at Yongang and Longmen in northwest China. The invention of printing and improvements in papermaking led to the printing of a whole set of Buddhist sutras (discourses of the Buddha) by 868. By the beginning of the 11th century all of the Confucian classics and the Taoist canon had been printed. In secular literature, the T’ang is especially well known for poetry. The great T’ang poets such as Li Po and Tu Fu were nearly all disillusioned officials.

The T’ang period marked the beginnings of China’s early technological advancement over other civilizations in the fields of shipbuilding and firearms development. Both reached new heights in the succeeding dynasty of Sung.

The Sung Dynasty (960–1279):-

Over 300 years of Sung history is divided into the two periods of Northern and Southern Sung. Because of the barbarian occupation of northern China the second halfof the Sung rule was confined to the area south of the Huai River.

Northern Sung (960–1126):-

General Chao K’uang-yin, later known as Sung T’ai Tsu, was said to have been coerced to become emperor in order to unify China. Wary of power-hungry commanders, Sung T’ai Tsu made the military into a national army under his direct control. Under his less capable successors, however, the military increasingly lost prestige. Unfortunately for China, the weakening of the military coincided with the rise of successive strong nomad nations on the borders.

In contrast to the military’s loss of prestige, the civil service rose in dignity. The examination system that had been restored in the Sui and T’ang was further elaborated and regularized. Selection examinations were held every three years at the district, provincial, and metropolitan levels.

Only 200 out of thousands of applicants were granted the jinshi degree, the highest degree, and appointed to government posts. From this time on, civil servants became China’s most envied elite, replacing the hereditary nobles and landlords.

Sung dominion extended over only part of the territories of earlier Chinese empires. The Khitans controlled the northeastern territories, and the Hsi Hsia (Western Hsia) controlled the northwestern territories. Unable to recover these lands, the Sung emperors were compelled to make peace with the Khitans in 1004 and with the Hsi Hsia in 1044. Massive payments to the barbarians under the peace terms depleted the state treasury, caused hardship to taxpaying peasants, and gave rise to a conflict in the court among advocates of war, those who favored peace, and reformers.

In 1069 Emperor Shen Tsung appointed Wang An-shih as chief minister. Wang proposed a number of sweeping reforms based on the classical text of the ‘Rites of Chou’. Many of his “new laws” were actually revivals of earlier policies, but officials and landlords opposed his reforms. When the emperor and Wang died within a year of each other, the new laws were withdrawn. For the next several decades, until the fall of the Northern Sung in 1126, the reformers and antireformers alternatedin power, creating havoc and turmoil in government.

In an effort to regain territory lost to the Khitans, the Sung sought an alliance with the newly powerful Juchens from Manchuria. Once the alliance had expelled the Khitans, however, the Juchens turned on the Sung and occupied the capital of Kaifeng. The Juchens established the dynasty of Chin, a name meaning “gold,” which lasted from 1115 to 1234, in the north. They took the emperor and his son prisoner, along with 3,000 others, and ordered them to be held in Manchuria.

Southern Sung (1126–1279):-

Another imperial son fled south and settled in 1127 at Hangzhou, where he resumed the Sung rule as the emperor Kao Tsung. The Sung retained control south of the Huai River, where they ruled for another one and a half centuries.

Although militarily weak and limited in area, the Southern Sung represented one of China’s most brilliant periods of cultural, commercial, maritime, and technological development. Despite the loss of the north, trade continued to expand, enabling a commercial revolution to take place in the 13th century. Cut off from the traditional overland trade routes, Sung merchants turned to the ocean with the aid of such improvements as compasses and huge oceangoing ships called junks. The development of a paper money economy stimulated commercial growth and kept it going.

The Sung cities:-

Oceanic and coastal trade was concentrated in large ports such as Canton, Hangzhou, and Chuanzhou (Marco Polo’s Zayton), where largeforeign trading communities developed. Koreans dominated the trade with the eastern islands, while Persians and Arabs controlled commerce across the western seas. Along with commercial expansion came the urbanization, or increasing importance of cities, in Sung society. Hangzhou, the Southern Sung capital, had a population of more than 2 million. Commercialization and urbanization had a number of effects on Chinese society. People in the countryside faced the problems of absentee landlordism. Although many city residents enjoyedluxury, with a great variety of goods and services, poverty was widespread.

A change associated with urbanization was the decline in the status of women of the upper classes. With the concentration of the upper classes in the cities, where the work of women became less essential, women were treated as servants and playthings. This was reflected in the practices of concubinage and of binding girls’ feet to make them smaller. Neither practice was banned until the 20th century.

Culture in the Sung period:-

The Sung period was noted for landscape painting, which in time came to be considered the highest form of classical art. The city-dwelling people of the Sung period romanticized nature. This romanticism, combined with a mystical, Taoist approach to nature and a Buddhist-inspired contemplative mood, was reflected in landscape paintings showing people dwarfed by nature.

In philosophy, the trend away from Buddhism and back to Confucianism, which had begun in the late T’ang, continued. Pure and simple restoration of the ancient teaching was impossible, however, because Confucianism had been challenged by Buddhism and Taoism. Confucianism needed to explain humanity and the universe as well as to regulate human relations within society. In the late T’ang and early Sung, several strands of Confucianism emerged. The great scholar Chu Hsi synthesized elements of Confucianism, Buddhism, and Taoism. This reconstituted philosophy became known as Neo-Confucianism, and it was the orthodox state doctrine until the end of the imperial system. Chu Hsi’s philosophy was one that stressed dualism, the goodness of human nature, and self-cultivation by education through the continuing “investigation of things.”

The Sung scholars and historians also attempted to synthesize history. Ssu-ma Kuang made the first effort at producing a comprehensive history since Ssu-ma Ch’ien of the Han. In 294 chapters, he wrote a chronological account of the period from 403 BC to AD 959, which was abridged by Chu Hsi in the 12th century. Anotherfirst in Sung scholarship was the creation of encyclopedias. ‘Assembled Essentials on the T’ang’, a collection completed in 961, became the example for the varioustypes of encyclopedic literature that followed.

The Sung period is famous for porcelain with a celadon glaze, which was one of the most desired items in foreign trade (see Pottery and Porcelain). The development of gunpowder led to the invention of a type of hand grenade. In shipbuilding, the great seagoing junks were admired and imitated by Arab and Western sailors. By far the largest ships in the world at the time, they had watertight compartments and could carry up to 1,000 passengers.

End of the Southern Sung:-

While the Sung ruling class and the imperial court indulged themselves in art and luxurious living in the urban centers, the latest nomad empire arose in the north. The formidable Mongol armies, conquerors of Eurasia as far west as eastern Europe and of Korea in the east, descended on the Southern Sung.

The Yüan (Mongol) Dynasty (1279–1368):-

The Mongols were the first of the northern barbarians to rule all of China. After creating an empire that stretched across the Eurasian continent and occupying northern China and Korea in the first half of the 13th century, the Mongols continued their assault on the Southern Sung. By 1276 the Southern Sung capital of Hangzhou had fallen, and in 1279 the last of the Sung loyalists perished.

Before this, Kublai Khan, the fifth “great khan” and grandson of Genghis Khan, had moved the Mongol capital from Karakorum to Peking. In 1271 he declared himself emperor of China and named the dynasty Yüan, meaning “beginning,” to signify that this was the beginning of a long era of Mongol rule.

In Asia, Kublai Khan continued his grandfather’s dream of world conquest. Two unsuccessful naval expeditions were launched against Japan in 1274 and 1281. Four land expeditions were sent against Annam and five against Burma. However, the Mongol conquests overseas and in Southeast Asia were neither spectacular nor were they long enduring.

Mongol rule in China lasted less than a century. The Mongols became the most hated of the barbarian rulers because they did not allow the Chinese ruling class to govern. Instead, they gave the task of governing to foreigners. Distrusting the Chinese, the Mongol rulers placedthe southern Chinese at the lowest level of the four classes they created. The extent of this distrust was reflected in their provincial administration. As conquerors, they followed the Ch’in example and made the provincial governments into direct extensions of the central chancellery. This practice was continued by succeeding dynasties, resulting in a further concentration of power in the central imperial government.

The Chinese despised the Mongols for refusing to adapt to Chinese culture. The Mongols kept their own language and customs. The Mongol rulers were tolerant about religions, however. Kublai Khan reportedly dabbled in many religions.

The Mongols were regarded with mixed feelings in the West. Although Westerners dreaded the Mongols, the Crusaders hoped to use them in their fight against the Muslims and attempted to negotiate an alliance with them for this purpose. Friar John of Carpini and William of Rubruck were two of the better known Christian missionaries sent to establish these negotiations with the Mongol ruler.

The best account of the Mongols was left by a Venetian merchant, Marco Polo, in his ‘Marco Polo’s Travels’. It is an account of Polo’s travels over the long and perilous land route to China, his experience as a trusted official of Kublai Khan, and his description of China under the Mongols. Dictated in the early 14th century, the book was translated into many languages. Although much of medieval Europe did not believe Polo’s tales, some, like Christopher Columbus, were influenced byPolo’s description of the riches of the Orient

After the death of Kublai Khan in 1294, successive weak and incompetent khans made the already hated Mongol rule intolerable. Secret societies became increasingly active, and a movement known as the Red Turbans spread throughout the north during the 1350s. In 1356 a rebel leader named Chu Yüan-chang and his peasant army captured the old capital of Nanjing. Within a decade he had won control of the economically important middle and lower reaches of the Yangtze River, driving the Mongols to the north. In 1368 he declared himself the emperor Hung-wu and established his capital at Nanjing on the lower Yangtze. Later the same year he captured the Yüan capital of Peking.

The Ming Dynasty (1368–1644):-

Having restored Chinese rule to China, the first Ming emperor tried to model his rule after that of the Han, but the Ming fell far short of the Han’s accomplishments. The land under Ming domination was less than under either the Han or the T’ang. The Ming dominion changed little after the first two decades. It was confined mostlyto what is known as China proper, south of the Great Wall and east of Xinjiang and Tibet.

In culture, as well, the Ming lacked the Han’s creativity and brilliance. Coming after almost a century of foreign domination, the Ming was a period of restoration and reorganization rather than a time of new discovery. In a sense, the Ming followed a typical dynastic cycle: initial rehabilitation of the economy and restoration of efficient government, followed by a time of stability and then a gradual decline and fall.

The emperor Hung-wu modeled his government on the T’ang system, restoring the doctrine and practices of Confucianism and continuing the trend toward concentration of power in the imperial government, especially in the hands of the emperor himself. He tried to conduct state affairs single-handedly, but the work load proved overwhelming. To assist him, he gathered around him several loyal middle-level officials, thus creating an extra-governmental organization, the Grand Secretariat. The central bureaucracy was restored and filled by officials selected by the examination system. That system was further formalized by the introduction ofa special essay style called the eight-legged essay, to be used in writing the examination. In addition, the subject matter of the examinations was restricted to the Five Classics, said to have been compiled, edited, or written by Confucius, and the Four Books, published by Chu Hsi.

In the field of provincial government, the emperor Hung-wu continued the Yüan practice of limiting the power of provincial governors and subjecting them directly to the central government. The empire was divided into 15 provinces. The first capital at Nanjing was in the economic heartland of China, but in 1421 the emperor Yung-Lo, who took the throne after a civil war, moved the capital to Peking, where he began a massive construction project. The imperial palace, which is also knownas the Forbidden City, was built at this time.

The Ming produced two unique contributions: the maritime expeditions of the early 15th century and the philosophy of Wang Yang-ming. Between 1405 and 1433, seven major maritime expeditions were launched under the leadership of a Muslim eunuch, Cheng Ho. Each expedition was provided with several seagoing vessels, which were 400 feet (122 meters) high, weighed 700 tons (635 metric tons), had multiple decks and 50 or 60 cabins, and carried several hundred people. During these expeditions, the Chinese sailed the South Pacific, the Indian Ocean, the Red Sea, and the Persian Gulf. They traveled as far west as eastern Africa and as far south as Java and Sumatra. But these missions ended just as suddenly as they had begun.

In philosophy, Wang Yang-ming developed a system of thought that ran counter to the orthodox teaching of Chu Hsi. While Chu Hsi believed in learning based on reason and the “investigation of things,” Wang Yang-ming believed in the “learning of the mind,” an intuitive process.

During the second half of the Ming Dynasty, European expansion began. Early in the 16th century Portuguese traders arrived and leased the island of Macao as their trading post. In 1582 Matteo Ricci, an Italian Jesuit missionary, arrived in Macao. Because of his knowledge of science, mathematics, and astronomy and his willingness to learn the Chinese language and adapt to Chinese life, he was accepted by the Chinese and became the first foreigner allowed to live in Peking permanently. Jesuits followed him and served the Ming emperors as mapmakers, calendar reformers, and astronomers.

Unlike earlier brief contacts with the West or the later Western incursions into China, the 16th-century Sino-Western relationship was culturally oriented and mutually respectful. Both the Chinese and the Jesuits tried to find common ground in their thoughts. The Jesuits’ activities produced 300,000 converts in 200 years, not a great number among a population of more than 100 million. Among them, however, were noted scholars such as Hsü Kuang-ch’i and Li Chih-tsao, who translated many of the works that Jesuits brought to China. The Jesuits wrote over 300 Chinese works.

In the last century of its existence, the Ming Dynasty faced numerous internal and external problems. The internal problem was tied to official corruption and taxation. Because the Ming bureaucracy was relatively small, tax collection was entrusted to locally powerful people who evaded paying taxes by passing the burden on to the poor. A succession of weak and inattentive emperors encouraged the spread of corruption and the greed of eunuchs. In the 1620s a struggle between the inner group of eunuchs and the outer circle of scholar-officials led to the execution of about 700 scholars.Externally, the security of the Ming empire was threatened from alldirections. The Mongols returned and seized Peking in 1550, and their control of Turkestan and Tibet was recognized by the Ming in a peace treaty of 1570. Pirates preyed on the east coast, and Japanese pirates penetrated as far inland as Hangzhou and Nanjing. In the 1590s the Ming had to send expeditionary forces to rescueKorea from invading Japanese soldiers under Toyotomi Hideyoshi. The Ming drove back the Japanese forces, but not without depleting the treasury and weakening their defensive network against neighboring Manchuria to the northeast.

In Manchuria the Manchus (Pinyin: Manzhous) had organized a Chinese-style state and strengthened their forces under a unique form of military organization called the banner system. However, it was not the Manchus who overthrew the Ming but a Chinese rebel, Li Tzu-cheng, who became a leader among the bandits who had become desperate because of a famine in the northwest in 1628. By 1642 Li had become master of north China and in 1644 he captured Peking.There he found thatthe last Ming emperor had hanged himself, ending the “Brilliant” dynasty. Li, however, was not destined to rule. The rule was to pass once again into the hands of a people from beyond the Great Wall, the Manchus. They were invited into China by the Ming general Wu San-kuei to eliminate the rebels. After driving the rebels from the capital, the Manchus stayed and established a new dynasty, the Ch’ing.

The Ch’ing Empire (1644–1911):-

Like the Mongols in the 13th century, the Manchus (formerly the Juchen) were barbarians who succeeded in ruling the whole of China, but, unlike the 13th-century conquerers, the sinicized Manchus made their rule more acceptable to the Chinese. As a result, Ch’ing rule lasted 267 years, compared with 89 years for the Yüan.

Pax Sinica (1683–1795)

The Manchus took Peking with relative ease in 1644, but they did not gain control of the whole of China until 1683. Thereafter, the Manchus enjoyed more than a century of peace and prosperity, a period that came to be called Pax Sinica (Peace in China). By the end of that period the dynasty had reached the height of its power.

Two strong emperors who were considered models of all Confucian ideals ruled for much of this period: the emperors K’ang-hsi (1661–1722) and Ch’ien-lung (1735–96). By recruiting the well-educated in government and promoting Confucian scholarship, these two Manchu rulers firmly established themselves as Confucian rulers in China. Outside China, both were successful conquerers. All of the Ch’ing empire’s vast territories, including Mongolia in the north, Xinjiang in the northwest, and Tibet in the southwest, were incorporated into the expanding Chinese Empire during this period.

The Ch’ing adopted the Ming system of government with two exceptions: the insertion of Manchu power at the head of the Chinese state, and the creation of the Grand Council in the emperor Yung-cheng’s reign. The Grand Council superseded the Grand Secretariat and became the most powerful body in the government. In provincial government, the Ch’ing created 18 provinces from the 15 Ming provinces. A governor, usually Chinese, headed each province, and a governor-general, usually a Manchu before the 19th century, headed every two provinces. Local landlords and administrators were generally left alone if they submitted to the new rule.

The K’ang-hsi era marked the height of Jesuit success in China, with more than 200,000 converts. Thereafter, Jesuit influence waned rapidly because of the rivalry between the Jesuits and other Catholic missionaries and the so-called Rites Controversy, which concerned the Jesuits’ willingness to tolerate the converts’ performance of ceremonies honoring Confucius. The pope denounced the Jesuit view and prohibited the ceremonies.

The long period of peace and prosperity had some adverse effects on Chinese society. There was a shortage of land, resulting from an increase in the population from 100 million to 300 million at the end of the 18th century. Decadence and corruption spread in the imperial court. There was a decline of the Manchu military spirit, and the Ch’ing military organization deteriorated. The long and illustrious reign of the emperor Ch’ien-lung was marred by the first of many serious rebellions in the Ch’ing era, the White Lotus Rebellion from 1796 to 1804. It was not put down for ten years, and China entered the 19th century rocked by revolt. More devastating were the incursions of Western powers, which shook the foundation of the empire.

Invasions and rebellions:-

The first of many Sino-Western conflicts in the 19th century was the first Opium War, fought from 1839 to 1842. It was more than a dispute over the opium trade in China; it was a contest between China as the representative of ancient Eastern civilization and Britain as the forerunner of the modern West. Free trade advocates in the West had protested against the restrictive trading system in force at Canton. They demanded free trade in China, the opening of more ports to Westerners, and the establishment of treaty relations. The Treaty of Nanjing, which ended the first Opium War, opened five ports to the British—the first of the “treaty ports” where Western nations were granted various privileges. A second Opium War, also known as the Arrow War, fought from 1856 to 1860, pitted China against Great Britain and France.

The Opium Wars disrupted the old life and economy of southern China. A number of peasant revolts occurred in the 1840s, coming to a head in the Taiping Rebellion, the biggest rebellion in Chinese history. The leader of the Taipings was Hung Hsiu-ch’üan, from a village near Canton. Believing that God had chosen him to save the world, he adopted a confused version of Christianity as his guiding doctrine and set out to overthrow the Manchus and change society. The combination of religious fervor and anti-Manchu sentiment attracted a following that rose to over 30,000 within a short time. In 1852 the T’ai-p’ing T’ienkuo (Heavenly Kingdom of Great Peace) was proclaimed. In 1853 the rebels took the city of Nanjing and made it their capital.

Other revolts erupted at about the same time: the Nien Rebellion in the northeast and Muslim rebellions in the southwest and the northwest. Fearing a linkup amongthe rebels that would engulf all of China, the Ch’ing government created regional armies manned entirely by Chinese and commanded by Chinese of the scholar-gentry class. The commanders of the new forces, all loyal supporters of the dynasty—Tseng Kuo-fan, Tso Tsung-t’ang, and Li Hung-chang—suppressed therebels with the help of Western weapons and leadership. They annihilated the Taipings in 1864, the Niens by 1868, and the Muslims by 1873.

The internal rebellions were suppressed, but external threats continued. After a brief period of “cooperation” in the 1860s, foreign powers renewed their assault on China, reacting to widespread antiforeign violence. Again, China became embroiled in a series of conflicts: the Tianjin Massacre with France in 1870, the Ili crisis with Russia in 1879, the Sino-French War from 1884 to 1885, and the Sino-Japanese War from 1894 to 1895. Each brought further humiliation and greater impairment of sovereignty. In the last two incidents territory was lost, and an indemnity had to be paid to the victor in the Sino-Japanese War.

Reforms and revolutions:-

The dynasty itself had fallen into the hands of the empress dowager Tz’u-hsi, who dominated the central government for the rest of the Ch’ing period. Both a schemerand an archconservative, the empress dowager considerably delayed China’s modernization.

The first steps toward modernization in China were taken in the 1860s with the establishment of factories to make Western-style armaments for the regional armies.After the rebellions, modernization in other sectors continued under regional leaders. Unlike Japan’s modernization effort, however, China’s lacked overall planning and central guidance. It was the country’s disastrous defeat at the hands of the Japanese, whom the Chinese had long referred to as “dwarf barbarians,” that jolted concerned Chinese scholars into forming “Self-Strengthening” societies. Not until 1898, when the Chinese mainland was being carved into spheres of influence by foreign powers, was the young Kuang-hsü emperor convinced of the need for drastic reform.

With the scholars K’ang Yu-wei and Liang Ch’i-ch’ao as his advisers, the emperor in 1898 issued a number of decrees called the Hundred Days’ Reform. These were to begin a wide range of changes, including reform of the educational system. However, Yüan Shih-k’ai, who had led the modernization of the military, betrayed the project to the empress dowager, who had gone into retirement. The emperor was seized and detained until his death ten years later, and Tz’u-hsi took over the administration. Members of the reforming group who could not escape were executed. The old order remained.

The next attempt at change took the form of a peasant rebellion. It was led by an anti-Manchu secret society, the Righteous and Harmonious Fists, known to Westerners as the Boxers. The Boxers aimed at expelling all foreigners, including the Manchus. After a year of unsuccessful attempts to suppress the Boxers, the imperial court officially enlisted them to fight the foreigners. In the summer of 1900 the Boxers attacked the foreign diplomatic quarters in Peking, and the governmentunder the empress dowager declared war on the foreign powers.

Once again the Ch’ing Dynasty was saved by loyal officials, who managed to convince the Western powers that the war was not official policy, but the result of rebellious forces. They were able to limit the Boxer catastrophe to northern China. The aging Li Hung-chang conducted peace negotiations. The resulting Boxer Protocol of 1901 marked the low point of the Chinese Empire; China was to pay an indemnity of 330 million dollars and to allow foreign garrisons on its soil.

After 1901 even the empress dowager was converted to reform. Much of the program proposed in the Hundred Days Reform of 1898 was enacted in the years 1901 to 1910, including reform of education and abolition of the civil service examinations, the creation of provincial assemblies, and a promise to establish a constitutional assembly. But the dynasty—and with it the 2,000-year-old dynastic system—was fast coming to an end. The personalities that had held the dynasty together disappeared from the scene. The empress dowager died in 1908, one day after the Kuang-hsü emperor. The empress dowager had designated his successor, who was the 2-year-old grandnephew of the empress.

Revolutionary ideas and organizations:-

The reforms that were sponsored by the imperial government were too little and too late. A drastic change was necessary. The idea of overthrowing the Manchus was suggested by Liang Ch’i-ch’ao in his concept of hsin min (new people). Publishing a magazine in Japan, where he had fled after the Hundred Days, Liang calledfor the Chinese people to renew themselves and also indicated that the Chinese nation was distinct and separate from the ruling dynasty of the Manchus. Although he did not advocate overthrowing the dynasty, the message was quickly picked up by the more radical leaders who were already leaning toward revolution.

One such leader was Sun Yat-sen, who is now revered as the father of modern China by Nationalists and Communists alike. Born into a peasant family near Canton, the traditional stronghold of anti-Manchu rebels, Sun followed a traditional Chinese path during his early years. He was educated in Hawaii, converted to Christianity, and had a short-lived medical career before switching to politics and attempting to propose a reform program to Li Hung-chang in 1894. After forming a secret revolutionary society and plotting an unsuccessful uprising in Canton in 1894, Sun began a long period of exile outside China. He gained wide recognition as a revolutionary leader in 1896, when his arrest in the Chinese legation in London and subsequent rescue were reported sensationally in newspaper articles.

In 1905, in Japan, he brought together several revolutionary groups and formed the Revolutionary Alliance Society. Its program consisted of the now famous Three People’s Principles: nationalism, freeing all China from foreign control; democracy, overthrowing the Manchus and introducing a democratic political system; and people’s livelihood. Although Sun himself could not live in China, members of the alliance infiltrated many social organizations there. The revolutionary spirit that had been developed by Sun became especially high among students’ and soldiers’ groups.

The Revolution of 1911:-

In the industrial city of Wuhan, a soldiers’ group with only a loose connection to Sun’s alliance rose in rebellion in the early morning of Oct. 10, 1911 (since celebratedas Double Ten, the tenth day of the tenth month). The Manchu governor and his commander fled, and a Chinese commander, Li Yüan-hung, was pressured into taking over the leadership. By early December all of the central, southern, and northwestern provinces had declared independence. Sun Yat-sen, who was in the United States during the revolution, returned and was chosen head of the provisional government of the Republic of China in Nanjing.

The Manchu court quickly summoned Yüan Shih-kai, the former commander of the reformed Northern Army. Personally ambitious and politically shrewd, Yüan carried out negotiations with both the Manchu court and the revolutionaries. Yüan was able to persuade the Manchus to abdicate peacefully in return for the safety of the imperial family. On Feb. 12, 1912, the regent of the 6-year-old emperor formally announced the abdication. The Manchu rule in China ended after 267 years, and with it the 2,000-year-old imperial system.

The Republic of China (1912–1949):-

Early in March 1912, Sun Yat-sen resigned from the presidency and, as promised, Yüan Shih-kai was elected his successor at Nanjing. Inaugurated in March 1912 in Beijing, the base of his power, Yüan established a republican system of government with a premier, a cabinet, a draft constitution, and a plan for parliamentary elections early in 1913. The Kuomintang (KMT, National People’s party), the successor to Sun Yat-sen’s organization, was formed in order to prepare for the election.Despite his earlier pledges to support the republic, Yüan schemed to assassinate his opponents and weaken the constitution and the parliament. By the end of 1914 he had made himself president for life and even planned to establish an imperial dynasty with himself as the first emperor. His dream was thwarted by the serious crisis of the Twenty-one Demands for special privileges presented by the Japanese in January 1915 and by vociferous opposition from many sectors of Chinese society. He died in June 1916 a broken man. After Yüan’s death, a number of his protégés took positions of power in the Beijing government or ruled as warlords in outlying regions. In August 1917 the Beijing government joined the Allies and declared war on Germany. At the peace conference in Versailles, France, the Chinese demand to end foreign concessions in China was ignored.

The May Fourth Movement:-

The Chinese felt betrayed. Anger and frustration erupted in demonstrations on May 4, 1919, in Beijing. Joined by workers and merchants, the movement spread to major cities. The Chinese representative at Versailles refused to endorse the peace treaty, but its provisions remained unchanged. Disillusioned with the West, many Chinese looked elsewhere for help.

The May Fourth Movement, which grew out of the student uprising, attacked Confucianism, initiated a vernacular style of writing, and promoted science. Scholars of international stature, such as John Dewey and Bertrand Russell, were invited to lecture. Numerous magazines were published to stimulate new thoughts. Toward the end of the movement’s existence, a split occurred among its leaders. Some, like Ch’en Tu-hsiu and Li Ta-chao, were beginning to be influenced by the success of the Russian Revolution of 1917, which contrasted sharply with the failure of the 1911 Revolution in China to change the social order and improve conditions. By 1920, people associated with the Comintern (Communist International) were disseminating literature in China and helping to start Communist groups, including one led by Mao Zedong. A meeting at Shanghai in 1921 was actually the first party congress of the Communist Party of China (CCP).

The CCP was so small that the Soviet Union looked elsewhere for a viable political ally. A Comintern agent, Adolph Joffe, was sent to China to approach Sun Yat-sen, who had failed to obtain assistance from Great Britain or the United States. The period of Sino-Soviet collaboration began with the Sun-Joffe Declaration of Jan. 26, 1923. The KMT was recognized by the Soviet Union, and the Communists were admitted as members. With Soviet aid, the KMT army was built up. A young officer, Chiang Kai-shek, was sent to Moscow for training. Upon returning, he was put in charge of the Whampoa Military Academy, established to train soldiers to fight the warlords, who controlled much of China. Zhou Enlai (also Chou En-lai) of the CCP was deputy director of the academy’s political department.

Sun Yat-sen, whose power base was in the south, had planned to send an expedition against the northern warlords, but he died before it could get under way. Chiang Kai-shek, who succeeded him in the KMT leadership, began the northern expedition in July 1926. The Nationalist army met little resistance and by April 1927had reached the lower Yangtze. Meanwhile, Chiang, claiming to be a sincere follower of Sun Yat-sen, had broken with the left-wing elements of the KMT. After the Nationalist forces had taken Shanghai, a Communist-led general strike was suppressed with bloodshed. Following suppressions in other cities, Chiang set up his own government at Nanjing on April 18, 1927. He professed friendship with the Soviet Union, but by July 1927 he was expelling Communists from the KMT. Some left-wingers left for the Soviet Union.

The northern expedition was resumed, and in 1928 Chiang took Peking. China was formally unified. Nationalist China was recognized by the Western powers and supported by loans from foreign banks.

The Nationalist era (1928–1937):-

The Nationalist period began with high hopes and much promise. More could have been accomplished had it not been for the problems of Comintern corruption andJapanese aggression. In his efforts to combat them both, Chiang neglected the land reform needed to improve the lives of the peasants. Driven from the cities, the Communists concentrated on organizing the peasants in the countryside. On Nov. 1, 1931, they proclaimed the establishment of the Chinese Soviet Republic in the southeastern province of Jiangxi, with Mao Zedong as chairman. Here the first units of the Chinese Workers’ and Peasants’ Red Army were formed. While conducting guerrilla warfare in these regions, the soldiers carried out an agrarian revolution that was based on Mao’s premise that the best way to win the conflict was to isolate the cities by gaining control of the countryside and the food supply.

A military man by temperament and training, Chiang sought to eliminate the Communists by force. He defined his anti-Communist drive as “internal pacification before resistance to external attack,” and he gave it more importance than opposition to the increasingly aggressive Japanese. With arms and military advisers from Nazi Germany, Chiang carried out a series of “extermination campaigns” that killed about a million people between 1930 to 1934. Chiang’s fifth campaign, involving over half a million troops, almost annihilated the Communists. Faced with the dilemma of being totally destroyed in Jiangxi or attempting an almost impossible escape, the Communists decided to risk the escape. On Oct. 15, 1934, they broke through the tight KMT siege. Over 100,000 men and women set out on the Long March of about 6,000 miles (9,600 kilometers) through China’s most rugged terrain to find a new base in the northwest.

In the meantime, the Japanese had made steady inroads into China. The Mukden Incident of 1931, through which Mukden was occupied by the Japanese, was initiated by Japanese officers stationed along the South Manchurian Railway. This was followed by the occupation of Manchuria and the creation of the puppet state of Manchukuo in 1932. By the mid-1930s the Japanese had seized Inner Mongolia and parts of northeastern China and had created the North China Autonomous Region with no resistance from the Nationalists. Anti-Japanese sentiment mounted in China, but Chiang ignored it and in 1936 launched yet another extermination campaign against the Communists in Shaanxi. Chiang was forced to give up the anti-Communist drive when his troops mutinied and arrested him as he arrived in Xi’an in December 1936 to plan strategy. He was released after he agreed to form a united front with the CCP against the Japanese, who were making steady inroads into China.

In China, World War II broke out on July 7, 1937, with a seemingly insignificant little battle between Chinese and Japanese troops near Peking, called the Marco Polo Bridge Incident. Within a few days, the Japanese had occupied Peking, and the fighting spread rapidly. The war in China fell into three stages. The first (1937–1939) was characterized by the phenomenally rapid Japanese occupation of most of China’s east coast, including such major cities as Shanghai, Nanjing, and Canton. The Nationalist government moved to the interior, ultimately to Chongqing in Sichuan, and the Japanese established puppet governments in Peking in 1937 and in Nanjing in 1940. The second stage (1939–1943) was a period of waiting, as Chiang blockaded the Communists in the northwest (despite the united front) and waited for help from the United States, which had declared war on Japan in 1941.

In the final stage (1944–1945), the United States provided massive assistance to Nationalist China, but the Chongqing government, weakened by inflation, impoverishment of the middle class, and low troop morale was unable to take full advantage of it. Feuds among the KMT generals and between Chiang and his United States military adviser, General Joseph Stilwell, further hampered the KMT.

When Japanese defeat became a certainty in the spring of 1945, the Communists seemed in a better position to take over from the Japanese garrisons than the KMT, which was far away in the rear of the formation. A United States airlift of KMT troops enabled them to occupy many cities, but the countryside stayed with the Communists.

After the end of World War II in Europe in May 1945, the Allied war effort moved to the east. The Soviet Union joined the war against Japan at the end of July. On August 6 and 9 the United States dropped the world’s first atomic bombs on the Japanese cities of Hiroshima and Nagasaki. On Aug. 14, 1945, the Japanese surrendered. In China, however, civil war raged over who should take charge of the Japanese arms and equipment. At the end of August an agreement was reached in Chongqing between a CCP delegation and the KMT, but the truce was brief.

In January 1946 a cease-fire was negotiated by United States General George C. Marshall. The Nationalist government returned to Nanjing, and China was recognized by the new United Nations as one of the five great powers. The United States supplied the Chiang government with an additional $2 billion ($1.5 billion had been spent for the war). Although the KMT’s dominance in weapons and supplies was enormous, it was kept under guard in the cities, while the Communists held the surrounding countryside. As inflation soared, both civilians and the military became demoralized. The CCP, sensing the national mood, proposed a coalition government. The KMT refused, and fighting erupted again.

The short and decisive civil war that followed was resolved in two main places: Manchuria and the Huai River area. Despite a massive airlift of KMT forces by the United States, Manchuria was lost in October 1948 after 300,000 KMT forces surrendered to the CCP. By the end of 1948 the KMT had lost over half a million men, more than two thirds of whom had defected. In April 1949 the Communists moved south of the Yangtze.

After the fall of Nanjing and Shanghai, KMT resistance evaporated. By the autumn, the Communists had taken all mainland territories except Tibet. Chiang Kai-shek and a number of his associates fled to the island of Taiwan, where they set up what they claimed was the rightful government of China.

The People’s Republic of China:-

On Oct. 1, 1949, Mao Zedong proclaimed the establishment of the People’s Republic of China. The CCP hailed its takeover of China as a people’s victory over and liberation from imperial domination (especially that of the United States) and the oppressive KMT regime. The Red Army was renamed the People’s Liberation Army. During the early days of the People’s Republic, the troops were restrained, foreign-educated Chinese returned to help the country, and most local administrators remained in office.

The first Communist government, the People’s Consultative Council, included non-Communists among its 662 members. However, in the top committee, 31 out of 56 seats were occupied by Communists, and the constitution of 1954 drastically curtailed the role of non-Communists. After 1954, more authority was concentrated in the central government under the State Council. Real power, however, lay with the Communist party, especially the Central Committee, then composed of 94 members. This committee held together the triad of power—army, government, and party. The inner circle of the Central Committee was the 19-member Political Bureau and its seven-member Standing Committee.

Land reform:-

One of the first tasks of the Communist government was land reform, redistributing land from landlords to the peasants. The Agrarian Law of 1950 began the nationwide land reform, which was almost completed by the beginning of 1953.

Social reform:-

Land reform erased the social distinction between landlord and peasant. The new marriage law of 1950 and the campaigns of the early 1950s removed distinctions within the family. Women were given full equality with men in matters of marriage, divorce, and property ownership. Children were encouraged to denounce parents ifthey failed to support the Communist line.

Thought reform:-

Believing that the revolution could not be carried on without reform of people, the CCP launched a massive campaign to change China’s entire psychology. The Four Olds campaign was launched to eradicate old ideas, habits, customs, and culture. The Three Anti’s movement was directed at officials, with the aim of eliminating corruption, waste, and “bureaucratism.” The Five Anti’s campaign, directed at the remaining businessmen and bourgeoisie, opposed bribery, tax fraud, cheating, andstealing state property and economic information. For Chinese Christians, The Three Selfs movement stressed self-government, self-support, and self-propagation,the object being to separate the churches in China from their parent denominations abroad. Leading churchmen were forced into denouncing religion as cultural imperialism. The idea of cultural imperialism was extended to art and literature, which henceforth were to serve the people, the class struggle, and the revolution.

Economic planning:-

Along with the reforms of land tenure, society, family, and even thought, the CCP announced the first five-year plan in 1953 to speed up the socialization of China through a planned economy. The plan’s aim was to produce maximum returns from agriculture in order to pay for industrialization and Soviet aid. The means chosenwas the collectivization of agriculture. Land and farm implements were pooled into cooperatives and later into collective farms, which controlled the production, price,and distribution of products. By May 1956, 90 percent of the farmers were members of cooperatives.

Similarly, 80 percent of heavy industry and 40 percent of light industry were in government hands by October 1952. The government also controlled all the railways and most steamship operations. To speed China’s development even more, Mao Zedong, Liu Shaoqi, and others, after overcoming some opposition within the leadership, launched the Great Leap Forward in 1958.

The Great Leap Forward:-

Designed to overcome the backwardness of China’s economy, industry, and technology, the Great Leap Forward was to be achieved through use of the vast manpower and indomitable spirit of the Chinese. Steel production was to be increased by setting up small-scale “backyard furnaces,” and agricultural output was to be raised by combining the collective farms into communes. About 26,000 communes were created by the Communist government, each composed of approximately 5,000 households.

After a year, the leaders admitted that the success of the program had been exaggerated. The steel produced by the backyard furnaces was of low quality, and the quantity fell short of the projected goal. The people’s reluctance to join communes was stronger than expected, and the size of the communes had to be reduced. Domestic life in homes, as well as private plots for family use, had to be restored. The effect of the Great Leap Forward on the people and the economy was devastating. Coupled with three straight years of poor harvests, it resulted in a severe food shortage and industrial decline. For the next several years, while lip service was paid to Mao’s thought and to Great Leap–type activism, the real power was in more conservative hands.

The Great Proletarian Cultural Revolution:-

A radical movement that closed schools and slowed production, the Great Proletarian Cultural Revolution virtually severed China’s relations with the outside world. It was proletarian because it was a revolution of the workers against party officials. It was cultural because it meant to alter the values of society in the Communist sense. It was great, because it was on a mammoth scale. It lasted for two years in its intense form, lingered on for another year and a half, and was not officially declared over until 1977.

The Cultural Revolution had its roots in a power struggle between Mao and his supporters, including his wife, Jiang Qing, and Lin Biao—who believed that the initial fervor of the revolution was being lost—and more conservative, bureaucratic elements within the leadership. One point at issue was the educational system, and particularly the fact that urban youth (especially the children of privileged officials) appeared to have a better chance of getting a university education than the children of rural peasants. Mao feared that Chinese society was becoming rigid, and to prevent this he relied for support on the military and on youth.

In the summer of 1966, a group of Beijing high school girls protested against the system of college en- trance examinations. The Central Committee acceded to the students’ demand by promising a reform and postponing the 1966 enrollment for half a year. Freed from their studies, students demonstrated in Beijing in August, touching off demonstrations of young people in general. Obviously inspired by Mao, youths wearing red armbands and flashing copies of the “little red book” containing Mao’s thought (‘Quotations from Chairman Mao Zedong’), marched through the streets shouting the slogan, “To bypass the Communist party apparatus and force the hierarchy’s political foes into submission.” These Red Guards, as they were called, were given free railway passes, and they poured into Beijing and other cities in great numbers throughout 1967.

In early 1967 some of the highest ranking leaders, former close revolutionary associates of Mao himself, were criticized and dismissed. Liu Shaoqi, who had been president of the republic, Zhu De, and Deng Xiaoping were among the better known victims. Even Confucius was attacked as having been a hypocritical supporter of the bourgeoisie. Throughout the country, revolutionary committees sprang up, seized power from the local government and party authorities, and harassed—and in some cases attacked—those suspected of being disloyal to Mao’s thought.

The disorders reached a climax in July 1967 in the city of Wuhan, when the local military commander tried to rally the people against the radicals and troops had to be sent in to restore order. From that time on, steps were taken to quiet the more disruptive portions of the Cultural Revolution, though it was not until 1968 that society returned to something resembling normality. In March 1969 the government issued a directive to open all schools. The situation was so chaotic, however, that the universities were not reopened until September 1970.

The Cultural Revolution greatly affected the CCP leadership. When the long-postponed ninth congress of the CCP was finally convened in April 1969, two thirds of the old members of the Central Committee were missing. Mao’s attempt to maintain a state of permanent revolution had been immensely costly. Years of work and progress were sacrificed: A whole generation of youth went without education; factories and farms lay idle. China fell even further behind the industrialized powers of the world.

As the Cultural Revolution died down, Zhou Enlai, who had been premier since the founding of the People’s Republic, quietly took control. Deng Xiaoping and other “pragmatic” leaders were reestablished. The party and government relaxed their control over the people and granted certain civil rights in a new constitution adopted in 1975.

Passing of the old guard

The year 1976 marked the end of an era. Zhou Enlai died in January. Zhu De, who as chairman of the Standing Committee of the National People’s Congress had been serving as nominal head of state, died in July. Finally, Mao himself, the chairman of the party and the embodiment of the revolution, died in September. Although many elderly leaders remained in positions of power, the old guard—the veterans of the Long March and the civil war—was clearly passing from the scene.

There were no provisions for automatic succession. At one time, Lin Biao had been Mao’s designated successor, but Lin had died under mysterious circumstances in 1971. The stage was set for a power struggle, with the initial advantage going to the radical faction. Zhou’s death left the moderate pragmatists in a weakened position, and Deng Xiaoping, as their most visible leader, came under immediate attack.

In April the people staged an unusual demonstration to protest the removal, by the police, of memorial wreaths honoring Zhou from Beijing’s Tiananmen (the Gate ofHeavenly Peace leading to the old Forbidden City). With this as an excuse, the radicals blamed Deng for the disorders and dismissed him from office. But the radicals, in turn, lost their protector when Mao died. Within a month, the “Gang of Four” radical leaders, including Jiang Qing, Mao’s widow, were arrested, and Deng was reinstated once again. The Gang of Four were subsequently tried and convicted of various crimes against the state. They became a convenient scapegoat for the new leadership, which did not wish to blame China’s ills on Mao directly.

In the following years, the pragmatists consolidated their position. Although he did not take any of the main party or government positions, Deng emerged as the outstanding figure within the leadership. An elderly man himself, he brought in younger men who shared his views. The new policies were confirmed in the party andstate constitutions adopted in 1982. These included accelerating China’s economic development by the best possible means; for example, by rewarding good work, even if this resulted in some inequalities in society. Steps were also taken to prevent the concentration of power that had marked Mao’s time. Thus, the new state constitution limited state leaders to two consecutive terms.

Nevertheless, the new leadership remained firmly committed to Communism. The 1982 constitution stated again the Four Fundamental Principles that should guide the society: the leadership of the Communist party, the “people’s democratic dictatorship,” the socialist road, and Marxism-Leninism-Mao Zedong Thought. The new constitution allowed a greater measure of political freedom and civil rights, and legal safeguards were introduced. It was evident, however, that there were limits to the new liberalization. After an early period during which considerable freedom of speech was allowed, the post-Mao leadership began to warn against destructive criticism.

The Four Modernizations:-

The new regime’s goal was the development of China’s economy by means of the Four Modernizations: of agriculture, industry, national defense, and science and technology. The Four Modernizations were first announced by Zhou at the tenth party congress in 1973, when the country was just starting its slow recovery from the Cultural Revolution. The new leadership under Deng placed great stress on them, with the aim of bringing China into the front rank among the world’s nations.

To achieve the ambitious aims of the program, the new leadership replaced the Maoist dogma of stressing the revolutionary spirit, the “red,” with the practical value of the “expert.” In education, academic achievements were emphasized, and nationwide college entrance examinations were reinstated. In industry, the authority of experts was reasserted. In agriculture, peasants were allowed private plots. Some overambitious projects were begun, and some replanning proved necessary. Nevertheless, the Chinese were cautiously optimistic that they would attain their goals. They set a reasonable economic growth rate of 7.2 percent per year and began a rigorous campaign to slow the rate of population increase. They hoped that these measures would quadruple industrial and agricultural production by the year 2000. In 1987 Deng retired and was succeeded by Zhao Ziyang as general secretary and Li Peng as premier. (See also Deng Xiaoping; Zhao Ziyang

Foreign affairs:-

In December 1949 the Soviet Union and China signed a 30-year alliance for defense against Japan and any ally associated with Japan (the latter provision aimed at the United States). In addition to military aid, the Soviet Union extended economic and technical assistance. Many Soviet technicians came to China, and many Chinese went to the Soviet Union for training. Good feeling between the two Communist powers reached a high point in 1953, when the Soviet Union relinquished its joint control over the railways in Manchuria. Two years later the Soviet Union withdrew from Lüshun (also called Port Arthur), which it had jointly used with China as a naval base after World War II. After the death of Joseph Stalin in the same year, however, China became increasingly independent of the Soviets. Destalinizationin the Soviet Union, tension along the border, and nationalism in both countries led to differences between the two powers. A complete break came when, with no warning, the Soviet Union withdrew its technicians from China in 1960. Relations between the two countries deteriorated until Mikhail Gorbachev became the leader of the Soviet Union in 1985. Since that time both countries more actively pursued the possibilities for reduced tensions and expanded contact with one another.

Soon after it was established, the People’s Republic had been recognized by a number of Western countries, with Great Britain taking the lead. The United States continued to recognize the Nationalist government on Taiwan as the government of China, however, and it led the opposition to the admission of the People’s Republic to the United Nations. There was a strong emotional attachment in the United States to the Nationalists. This was solidified when China entered the Korean War later in 1950 on the side of North Korea. The Chinese action deprived the United Nations (chiefly United States) forces of a victory against the North Koreans and led, eventually, to a stalemate.

Through the 1950s and 1960s relations between the two countries remained frozen. The United States, locked in the Cold War with the Soviet Union, tended to see all Communist countries as part of the same monolithic bloc. Sentiment against “Red China” was kept alive within the United States by the so-called China lobby of Chiang’s supporters, many of them old China hands with long-standing ties to the Nationalists or missionaries who had been ejected from China after the revolution. Meanwhile, the Chinese did little to develop relations with the West. Outside the Communist bloc, the main foreign relations efforts were directed toward the Third World. China gave aid to a number of African countries, but its relations with its Asian neighbors were frequently strained by its support of radical insurgency movements. A border dispute erupted into a short war with India in 1962.

As the years passed, it became apparent that the Nationalists were unlikely to reconquer the mainland. China’s split with the Soviet Union shattered the picture of a Communist monolith. Zhou Enlai, taking control after the Cultural Revolution, began to make contacts with the West. His reasons were both political—to obtain support in the face of Soviet hostility—and economic—to gain access to Western trade and technology.

In the early 1970s China began to indicate a willingness to establish contacts with the United States. After intense behind-the-scenes negotiations, President Richard M. Nixon went to China in early 1972, and, in a joint communiqué, the two countries declared their intention to normalize relations. This procedure, however, took nearly seven years to accomplish. By that time, most of the countries of the world, including Japan, had established diplomatic relations with the People’s Republic of China.

The main reason for the delay was Taiwan. The Beijing government insisted that the United States cease to recognize the Nationalist government, but the United States was reluctant to break with its old ally. In the end it did so with the understanding that it could maintain unofficial contacts. It also agreed to terminate its defense treaty with Taiwan. The solution of the Taiwan problem seemed distant, however. Since 1949, Taiwan had become a prosperous and rapidly industrializing country. It had little desire to rejoin the mainland, where the standard of living was much lower. However, both the Nationalists and the People’s Republic insisted that Taiwan was an integral part of China, ruling out any solution that involved making Taiwan a separate nation. In the early 1990s a movement for independence forTaiwan threatened to disrupt relations between them. (See also Taiwan.)

Soviet President Gorbachev met with Deng in Beijing in May 1989 in their countries’ first summit since 1959. The meeting normalized relations between the two countries, and in 1990 Chinese Premier Li Peng on a visit to Moscow signed a ten-year economic and scientific cooperation agreement. The next year Jiang Zemin visited Moscow to try to settle old border disputes. He was the first Communist party chief to visit Moscow since Mao in 1957.

A pro-democracy demonstration by about 1,000 students began in Beijing on April 16, 1989, in Tiananmen Square, a plaza in the center of the city. The rally was triggered by the death on April 15 of former Communist party General Secretary Hu Yaobang, who had become a hero to Chinese liberals when he refused to halt student unrest in January 1987. Despite government warnings, the peaceful protests continued for the next month, drawing as many as 250,000 supporters to the square.

The number of protesters swelled to more than 1 million on May 17 and included about 3,000 who participated in a hunger strike from May 13 to May 21. The government imposed martial law on May 20 and urged citizens to turn in dissidents. Military convoys were sent to Beijing, but protesters managed to block most of them from reaching the square.

On June 4 thousands of army troops stormed the area around Tiananmen Square in an attempt to regain order. Using tanks, machine guns, clubs, and tear gas, they attacked the unarmed protesters. The army stated that more than 1,000 soldiers had been killed; United States officials estimated that there had been more than 3,000 civilian deaths. The Chinese government gave an official death toll of 300 and said that most of the dead were soldiers.

By the end of June more than 1,600 people had been arrested for taking part in what the government called rumor-mongering, hooliganism, and counterrevolutionaryactivities; 27 people had been executed; and Zhao Ziyang had been ousted as general secretary of the Communist party.

In October 1996 Wang Dan, a 27-year-old student activist who played a prominent role in the 1989 pro-democracy rally in Beijing, China’s Tiananmen Square, received an 11-year sentence for inciting what authorities had labeled a “counterrevolutionary riot.” The criminal trial lasted a mere four hours, after which the judge delivered one of the harshest sentences imposed upon any of the student activists involved in the Tiananmen protest.

Following the Tiananmen Square uprising Wang was declared public enemy number one. He turned himself in to Chinese officials and was imprisoned for four years, after which he was temporarily released. In 1995 the government rearrested Wang and, despite international condemnation, detained him until the time of his trial. The treatment of Wang and other political prisoners raised grave concerns throughout the international community and prompted many nations to push for sanctions against the Chinese government. The timing of Wang’s trial seemed to be intended by the Chinese rulers as a stark rebuff of calls for tolerance in dealing with political dissent, as the trial occurred less than two weeks before United States Secretary of State Warren Christopher was scheduled to visit the nation.

The Death of Deng Xiaoping:-

In the government shake-up following the Tiananmen Square uprising in Beijing in 1989, Jiang Zemin, who replaced Zhao Ziyang as general secretary of China’s Communist party, was also named head of the Central Military Commission and designated by Deng as his choice to succeed him as China’s paramount leader.

The Chinese government experienced a momentous change on Feb. 19, 1997, when long-time leader Deng Xiaoping died. Although Deng had retired from all of hisofficial duties years before his death, he remained the “paramount leader” of the country, and his death created a significant vacuum at the top of China’s ruling echelon. Jiang Zemin emerged as China’s leader in spirit and in fact. Jiang was selected to fill Deng’s official roles following the shake-up that occurred within the Chinese government in the aftermath of the Tiananmen Square crackdown in 1989.

Two significant issues faced Jiang’s government. The first was that of the continuing international pressure on China over the issue of human rights abuses. In April 1997 Jiang’s government announced that it would comply with the International Covenant of Economic, Social, and Cultural Rights, one of two major international human rights treaties, but it refrained from signing a second treaty on civil and political rights. Charges about human rights abuses included reports that Chinese prisons were using forced labor to produce goods for export to the United States. Despite Beijing’s unwillingness to significantly alter its policies on human rights, United States President Bill Clinton in May 1997 urged the United States Congress to once again renew China’s most-favored-nation trade status. In November 1997, after months of receiving increasingly sharp international criticism concerning alleged human rights violations, the Chinese government released from prison Wei Jingsheng, the most prominent of China’s pro-democracy dissidents. Wei was imprisoned in 1979, and he spent the majority of the ensuing 18 years as a political prisoner.

Reunification with Hong Kong:-

The second and related issue facing the Chinese government involved the province of Hong Kong, which was scheduled to revert to Chinese control on June 30, 1997, after more than 150 years of British rule. Governments around the world, as well as international businesses and residents of Hong Kong, expressed concernover how the Chinese government would incorporate the largely autonomous and highly profitable territory of Hong Kong into the Chinese economic, social, and political landscape. Although the rule of the British colonial government throughout most of its period of control in Hong Kong had been arbitrary and undemocratic, significant progress had been made throughout the 1990s in opening political institutions and granting civil rights to the residents of Hong Kong, the neighboring Kowloon province, and the New Territories. In 1991 Hong Kong held direct democratic elections for the Legislative Council, the first truly democratic elections held during the entirety of British rule. That year, the British also extended to Hong Kong a bill of rights, which included much leeway in allowing residents the right to assemble and protest. China repeatedly assured the residents of Hong Kong and the international community that the issue of reintegrating Hong Kong into China—at least in terms of economic issues—would be handled with delicacy, pledging that China and Hong Kong would exist as one country with two distinct economic systems. As for political and civil rights, the future prospects remained murky. In 1996 Beijing appointed Tung Chee-hwa, a business magnate with pro-China sympathies, to serve as the governor of Hong Kong following the transfer of power. In February 1997, as anticipation and trepidation over the transfer of power continued to mount, Tung announced that certain civil rights—such as the freedom to assemble and stage mass protests—extended by the colonial British government in that territory would be repealed or modified. Tung stated that such laws had been instituted after the passing of the Basic Laws, and that the Chinese government was therefore not required to abide by them. The Basic Laws, which were worked out by Britain and China in 1990, are, in effect, a constitution and they set down laws for Hong Kong after the 1997 power transfer.

To protest China’s revision of the British-passed bill of rights, Hong Kong residents staged numerous public protests. On June 4, 1997, 55,000 pro-democracy demonstrators gathered in the heart of Hong Kong in a memorial service both to honor the eighth anniversary of the Tiananmen Square crackdown in Beijing and to demonstrate support for civil and political rights. In the weeks leading up to the transfer of power, the Chinese government attempted to convince the population of Hong Kong that it would not attempt a radical revision of the internal governing of Hong Kong. During the power-transfer celebration Jiang Zemin expressed his commitment to maintaining Hong Kong’s continued economic, legislative, and judicial autonomy, and he promised to schedule elections for an independent legislature for Hong Kong in 1998. Those elections were held in May 1998.

Emergence of Capitalism and Tension with the West:-

In September 1997 China’s Communist party gathered for its 15th party congress—the primary political event in shaping the Chinese government and its policies. Jiang Zemin emerged from the congress as the dominant political leader and party power broker, as well as the individual likely to lead China into a new era of economic liberalization. Jiang dismissed from the Central Committee three of his foremost political rivals and positioned his supporters—relatively young, college-educated, and technocratic party members—in key political posts. Jiang announced that the government would step up its efforts to further modernize the burgeoning Chinese economy by selling off 10,000 of the 13,000 state-owned small- and medium-size state factories and industries to private investors. The proposed measure would amount to an unprecedented degree of private ownership in the country.

When Chinese Premier Zhu Rongji traveled to the United States to meet with President Bill Clinton in April of 1999, an array of difficult issues confronted the leaders. While they were ostensibly meeting to discuss trade, human rights, and security issues, American frustration with a ballooning trade deficit and allegations of Chinese espionage loomed over the negotiations. As China’s leading free-enterprise reformer, it was widely thought that Zhu would at last gain Clinton’s support for China’s entry into the World Trade Organization (WTO). While Zhu and Clinton did reach numerous agreements on issues of trade, they failed to broker an agreement allowing Chinese entry into the WTO.

The issue of Chinese espionage had come to light in March 1999, when United States officials acknowledged that Chinese spies had gained highly classified information about American nuclear warheads during a 20-year campaign of espionage dating back to the 1970s. A report issued by a special committee of the United States House of Representatives in May 1999 claimed that China had infiltrated the most sensitive nuclear research laboratories and that they had gained technological information about every type of nuclear warhead deployed by the United States.

The House report came on the heels of an incident that had severely strained relations between the United States and China. On May 7, North Atlantic Treaty Organization (NATO) forces bombed the Chinese embassy in Belgrade during their air campaign against the government of Slobodan Milosevic. While the United States asserted that the embassy bombing had been an accident, and forthrightly apologized, the Chinese government was infuriated. Chinese leadership tacitly supported anti-American protests throughout China, including violent demonstrations at the United States embassy compound in Beijing. The bombing brought relations between the two countries to their lowest point in years. China suspended talks with the United States over several issues, including human rights, but vowed to continue talks on trade issues.

India

Introduction:-

Nearly one sixth of all the human beings on Earth live in India, the world’s most populous democracy. Its borders encompass a vast variety of peoples, practicing most of the world’s major religions, speaking scores of different languages, divided into thousands of socially exclusive castes, and combining the physical traits of several major racial groups. A civilized, urban society has existed in India for well over4,000 years, and there have been periods when its culture was as brilliant and creative as any in history.

India’s leaders have played a prominent role in world affairs since the country became independent in 1947. Nevertheless, the standard of living of most of its citizens is low. The huge population strains the nation’s limited resources. Fertile, cultivable land is scarce, yet more than two thirds of the people depend directly on agriculture for their livelihood. Many millions of Indians are inadequately nourished, poorly housed, and lacking in basic educational, medical, and sanitary services.

The modern nation of India (also known by its ancient Hindi name, Bharat) is smaller than the Indian Empire formerly ruled by Britain. Burma (now Myanmar), a mainly Buddhist country lying to the east, was administratively detached from India in 1937. Ten years later, whenBritain granted independence to the peoples of the Indian subcontinent, two regions with Muslim majorities—a large one in the northwest (West Pakistan) and a smaller one in the northeast (East Pakistan)—were partitioned from the predominantly Hindu areas and became the separate nation of Pakistan. East Pakistan broke away from Pakistan in 1971 to form the independent nation of Bangladesh. Also bordering India on its long northern frontier are the People’s Republic of China and the relatively small kingdoms of Nepal and Bhutan. Theisland republic of Sri Lanka lies just off India’s southern tip.

Land and Natural Resources:-

Much of India’s area of almost 1.3 million square miles (3.3 million square kilometers—including the Pakistani-held part of Jammu and Kashmir) is a peninsula jutting into the Indian Ocean between the Arabian Sea on the west and the Bay of Bengal on the east. There are three distinct physiographic regions. In the north the high peaks of the Himalayas lie partly in India but mostly just beyond its borders in Nepal, Bhutan, and Tibet. South of the mountains, the low-lying Indo-Gangetic Plain, shared with Pakistan and Bangladesh, extends more than 1,500 miles (2,400 kilometers) from the Arabian Sea to the Bay of Bengal. Finally, the peninsular tableland, largely the Deccan, together with its adjacent coastal plains, makes up more than half of the nation’s area.

The Himalayas:-


The northern mountain wall consists of three parallel ranges. The highest of these ranges is the Greater Himalayas, which include several peaks that rise above 25,000 feet (7,600 meters). Even the passes through these mountains are farther above sea level than the highest summits of the Alps. India has the world’s largest area under snow and glaciers outside the polar regions.

Lower mountain ranges branch off from both ends of the Himalayan system, running along the border with Myanmar toward the Bay of Bengal in the east and—mainly through Pakistan—toward the Arabian Sea in the west. Thus, the low-lying country to the south is relatively isolated from the rest of Asia. This accounts for its recognition as a subcontinent.

The Indo-Gangetic Plain:-


The Indo-Gangetic Plain, with an area of about 270,000 square miles (700,000 square kilometers), varies in width by several hundred miles. It is the world’s most extensive tract of uninterrupted alluvium. These deep, river-deposited sediments give rise to fertile soils. In addition, they are rich in groundwater for well irrigation. The flat terrain also makes the area ideal for canal irrigation.

The greater part of the Indo-Gangetic Plain is drained by the Ganges River, which rises in the southern Himalayas and flows in a generally south to southeast direction to the Bay of Bengal. Its principal tributary, the Yamuna, or Jumna, flows past New Delhi, the capital of India, to join the Ganges near Allahabad. North of Goalundo Ghat in Bangladesh, the Ganges is joined by the Brahmaputra. The Indus and its tributaries drain the western and southwestern partsof the plain. The northern part of this area, now divided between India and Pakistan, is traditionally known as the Punjab, or Land of the Five Rivers, for the five major tributaries of the Indus—the Jhelum, Chenab, Ravi, Sutlej, and Beas. Also on the India–Pakistan border and considered part of the plain is the arid Thar, or Great Indian, Desert.

The Deccan:-


The so-called tableland of India is actually a more complex landform region than that word suggests. Most of the 735,000 square miles (1.9 million square kilometers) of the Deccan are relatively flat, with elevations ranging from 1,000 to 2,000 feet (300 to 600 meters) above sea level. However, the terrain also includes numerous ranges of hills, as well as several long, prominent escarpments. Anai Mudi (8,842 feet, 2,695 meters), in the Southern Ghats, is the highest peak in peninsular India.

The coastal plains flanking the Deccan are relatively narrow, ranging from 6 to 80 miles (10 to 130 kilometers). The eastern plain is drained by several large deltas, including, from north to south, those of the Mahanadi, Godavari, Krishna, and Kaveri rivers.

India is rich in nonenergy mineral resources and moderately well endowed with coal, but it is poor in proven reserves of petroleum and natural gas. The principal mineral deposits lie south of the Indo-Gangetic Plain. Foremost among mineral-rich regions is the Chota Nagpur Plateau. This area contains India’s main coal deposits as well as large quantities of high-grade iron ore, copper, bauxite, limestone, mica, and chromite. At more than 100 billion tons, the country’s coal reserves are the fifth largest in the world. However, most of the coal is of poor quality because of its high ash and moisture content. Proven on-land petroleum reserves are insufficient to meet current demand. There has been some success with offshore exploration. Many of India’s rivers are potential sources of hydroelectric power.

Climate:-


In general, India’s climate is governed by the monsoon, or seasonal, rain-bearing wind. Most of the country has three seasons: hot, wet, and cool. During the hot season, which usually lasts from early March to mid-June, very high temperatures are accompanied by intermittent winds and occasional dust storms.

Strong, humid winds from the southwest and south usually bringing very heavy rains that fall almost daily in the middle or late afternoon—the “burst of the monsoon”—herald the start of the wet season. It may begin as early as late May in the south. Eventually, the rains taper off, and by late October cool, dry, northerly air has replaced the humid marine air over all of India except the southeastern third of the peninsula. This “retreat of the monsoon” marks the start of the cool season.

Average annual precipitation varies widely. Cherrapunji in the Shillong Plateau just north of Bangladesh receives 450 inches (1,143 centimeters), making it the second rainiest place on Earth, after Mount Waialeale in Hawaii (460 inches, 1,168 centimeters). At the other extreme, the western Thar Desert averages only 4 inches (10 centimeters). In the driest parts of India, however, the rainfall is highly variable.

Temperature varies as does rainfall in different parts of India. Hill stations in the Himalayan region, such as Darjeeling and Simla, record the lowest temperatures, with annual averages of between about 54° and 57° F (12° and 14° C). In the Indo-Gangetic Plain, Delhi and Allahabad register an average of 79° F (26° C).

Plant and Animal Life:-


Most of the far northeast (north and east of Bangladesh), northern West Bengal, and the west coast from Cochin to somewhat north of Bombay get more than 80 inches (200 centimeters) of rainfall annually. This is usually enough to keep the soil moist throughout the year. The natural vegetation associated with these regions is an exceedingly varied, broadleaf, evergreen rain forest, typically tall and dense. Much of the rain forest, however, is in hilly regions that have been repeatedly burned over and cleared for slash-and-burn agriculture, a type of farming particularly associated with India’s tribal population. As a result, the soil has become less fertile. Where the forest has grown again, it is generally lower and less open than the original vegetation.

Areas with from 40 to 80 inches (100 to 200 centimeters) of rainfall (enough to grow at least one crop of rice) include almost the whole northeastern peninsular region, the eastern Gangetic Plain, a narrow belt on the plains and hills just south of the Himalayas as far west as Kashmir, another belt just east of the crest of the Western Ghats, and most of the southeastern, or Coromandel, coast. In these areas, as average rainfall declines the forests become progressively shorter, less dense, and less varied.

In addition, as rainfall declines from 80 to 60 inches (200 to 150 centimeters) evergreens gradually give way to deciduous species, which in these regions lose their leaves during the cool, dry season. Where government protection from slash-and-burn agriculture has kept forests intact, they include good stands of teak, sal, and other excellent timber species.

Most of the rest of India averages from 20 to 40 inches (50 to 100 centimeters), enough to grow one crop of grain other than rice. The natural vegetation consists of low, open forests, intermixed with thorny shrubs and grasses. Little of the original vegetative cover remains.

A wide variety of distinctive vegetation types occurs as a result of special ecological conditions. Tall grass savannas, with scattered acacias, grow on the moist soils of the Terai, the fringe of plains bordering the northern mountains. Mangrove forests are found in the brackish deltas of the east coast, and many types of palms growin sandy or salty soils. Often impenetrable stands of bamboo sprout up in fields formerly given over to slash-and-burn cultivation.

The alterations in India’s vegetation over the centuries have brought about many changes in the animal life. Today the dominant forms are cattle, goats, buffalo, sheep, and, in the drier regions, camels. While cattle are essential to the nation’s economy, there is a religious taboo against their slaughter.

In the forests and the high, rugged areas where wild species are still dominant, the array of animals remains rich. Among large mammals are the Indian elephant, still regularly rounded up and domesticated in several areas; the rhinoceros, living almost exclusively in game sanctuaries; over a dozen species of deer and antelope; and wild cattle, sheep, goats, and boars.

Carnivores, or meat eaters, include tigers and leopards; lions, once wide-ranging but now confined to the Gir Forest on the Kathiawar Peninsula; the nearly extinct cheetah; and a variety of bears. Monkeys, especially langurs and rhesuses, are common even in cities. The cobra is the best-known reptile. Three species of crocodiles are found. There are about 1,200 species of birds, among them vultures, parrots, mynas, quail, and bustards.

People and culture:-


It is not certain which racial group first occupied India. The assumption is often made that the first inhabitants had characteristics in common with the small-statured, dark, aboriginal population of Australia, as well as with other tribal groups still found in isolated, forested regions of Southeast Asia. Therefore, the term proto-Australoid has been applied to the racial type represented by a number of tribes still living in India, mainly in the states of Bihar, Orissa, and Madhya Pradesh. Other early arrivals were the ancestors of the peoples, now living mainly in southern India, who speak languages of the Dravidian family. The Mongoloid peoples have also been in India a long time. Their present-day descendants include several tribal groups living along the frontiers with Myanmar, China (Tibet), Bhutan, and Nepal.

Not later than the middle of the 2nd millennium BC, a wave of migrants of inner Eurasian origin began to filter into India through passes on the northwestern frontier of the country. These invaders, known as Aryans, had relatively light skin and spoke languages of the Indo-European family.

Throughout recorded history new groups have continued to penetrate India, mainly from the northwest: Persians, Arabs, Turks, Mongols, Afghans, and, since the 16th century, small numbers of Western Europeans. Over the millennia all these peoples have interbred in varying degrees. The resulting mixture is so highly complex that it is virtually impossible to draw clear racial distinctions among the people of India today.

Language:-

Linguistic differences are much clearer than those of racial groupings. Two linguistic groups, the Indo-Aryan and the Dravidian, account for all but a tiny proportion of the population. Of the Indo-Aryan languages, Hindi, the official national language, is the most important. In its standard form and its many dialects, it is spoken by about 43 percent of the population and is understood by a large number of others. It is predominant in the northern and central regions. Included among the Hindi variations is Urdu, referred to until 1947 as Hindustani or Khari Boli, which is recognized as a separate “official” language in the Indian constitution. Urdu is also the official language of Pakistan and is spoken by most Indian Muslims (except in the far south and east).

Other important Indo-Aryan languages are Bengali (the official language of the state of West Bengal and also of Bangladesh), Panjabi (the official language of the state of Punjab and the most widely spoken language of Pakistan), and Marathi, Gujarati, Oriya, Assamese, and Kashmiri (respectively, the official languages of the states of Maharashtra, Gujarat, Orissa, Assam, and Jammu and Kashmir). Two other languages of the Indo-Aryan family are among the 15 regarded as official languages by the constitution: Sanskrit, a classical literary language, and Sindhi, spoken largely in the Sind province of Pakistan and also by Hindu refugees who came to India after partition in 1947. The list of official languages includes four Dravidian tongues: Telugu, Tamil, Malayalam, and Kannada, which predominate, respectively, in the southern states of Andhra Pradesh, Tamil Nadu, Kerala, and Karnataka.

English is understood by most educated persons. While it is not one of the 15 languages, it is officially recognized and is used, for example, for correspondence between Hindi-speaking and non-Hindi-speaking states. It is also the language shared by the Dravidian-speaking south and the Hindi-speaking north. Of the scoresof languages not officially recognized, many are spoken almost exclusively by tribal peoples, known collectively as Adibasis.

Hinduism:-


Though a number of religions flourish in India’s tolerant social climate, four fifths of the people are Hindus. Hinduism evolved from Vedism, the religion of the early Aryan invaders. While it recognizes innumerable gods, they are widely regarded as diverse manifestations of one great universal spirit. Hinduism has no standard orthodox form. It is, in effect, what people who call themselves Hindus do in carrying out their dharma, or religious obligations. This varies considerably from one region and social group to another. (See also Hinduism.)

Caste:-

The social groups with which Hindus identify most strongly are their jatis, or castes. A caste is a hereditary group whose members intermarry only among themselves. Each has its own origin myth, traditional occupation, rules relating to kinship, diet, and various forms of behavior. Castes are graded in a social and ritual hierarchy in which each expects respect from inferior groups and gives respect to superior ones. While obviously creating disparities, the caste system is not regarded by most Hindus as unjust. According to generally accepted beliefs associated with reincarnation, or rebirth after death, the caste into which one is born depends on one’s karma—that is, one’s accumulated good and bad deeds in previous existences. The way to achieve higher status in future incarnations is to accept one’s station in life and live accordingly. This is the path that may eventually lead to salvation, called moksha, freedom from the continuous round of rebirths.

There are thousands of jatis, but most may be grouped into four great social classes called varnas. The highest are the Brahmans, the priestly castes that traditionally dominated the learned professions and still wield great influence. Next are the Kshatriyas, traditionally warriors, rulers, and large landowners. Third are the Vaishyas, once mainly farmers but now chiefly associated with commerce. Lowest are the Shudras, who today constitute the mass of India’s artisans and laborers.

Below the Shudras are a number of castes with no varna designation. Traditionally these outcastes were regarded as “Untouchables” because their association with unclean occupations, such as scavenging and leatherworking, made them ritually impure and able to convey pollution to others. These groups have always been subject to considerable prejudice. The nationalist leader Mohandas K. Gandhi, who tried to ensure that they were treated humanely, bestowed on them the name Harijan, or children of God, by which they are now popularly known.

Officially they are recognized as “scheduled castes.” The Indian constitution, which outlaws untouchability, requires that a “schedule” of such groups be prepared in every state as an aid to providing them with special benefits. The aim is to help them overcome their disadvantaged position. Thus, they are guaranteed seats in the national and state parliaments, at least in proportion to their 15 percent of the population, as well as minimum quotas for placement in universities and government, and various other benefits. Similarly, the tribal peoples, 7.5 percent of the population, are designated as “scheduled tribes” and given corresponding benefits.

Islam:-


Muslims, who constitute 11 percent of the population, are the largest religious minority. Many of these followers of the monotheistic faith of Islam are descendants of invaders from the Middle East and Central Asia who began entering the subcontinent as early as the 8th century. Most, however, are descendants of converts from Hinduism and other faiths. The majority belong to the Sunnah branch of Islam, though the Shi’ah sect is well represented among Muslim trading groups of Gujarat.

Although Islam, unlike Hinduism, stresses the equality of people, the institution of caste is so strong in the subcontinent that it has affectedthe communities professing Islam and most other faiths. Thus, most Indian Muslims intermarry within graded, castelike groups, many of which have traditional occupations. Muslims form a majority of the population in Jammu and Kashmir and substantial minorities in the states of Uttar Pradesh, West Bengal, Assam, and Kerala.

Other Religious Minorities:-

Sikhs, with 2.6 percent of the population, are predominant in the state of Punjab. Their faith, which dates from the early 16th century, combines aspects of Hinduism, such as belief in reincarnation, with ideas borrowed from Islam, in particular strict belief in only one God. A militant brotherhood, they are recognizable by their distinctive beards and turbans. Sikhs form a prominent part of India’s army and are influential in many professions and in government.

Two ancient and related faiths, Buddhism and Jainism, each have several million followers in India. Though Buddhism originated in India, it became virtually extinct there and remained so until 1956, when a renowned leader of the scheduled castes, B. R. Ambedkar, converted to it. Millions of his followers subsequently followed suit. Jainism, never very popular, has contributed enormously to Indian art, architecture, and religious thought. For centuries the small Jaina community has been especially prominent in commerce. Both Jainas and Buddhists practice ahimsa, or nonviolence, one of many religious beliefs they share with the Hindus. The Zoroastrians, known as Parsis, form another small (barely 100,000) but highly educated and influential religious community. Members of a religion founded in the 6th century BC by the Iranian prophet Zoroaster, they are descendants of Zoroastrians who fled to India from the 10th century onward to escape Muslim persecution. (See also Buddhism; Jainism; Zoroastrianism and Parsiism.)

Christianity claims to date back to AD 52, when St. Thomas, one of the 12 apostles, is said to have landed on the west coast of India. He is recognized as the founderof the Syrian Christians. Roman Catholics, including many descendants of 16th-century converts, are the most numerous Christian group, especially on the west coast and in the far south. During the last two centuries, Protestant missionaries have been especially successful among tribal and scheduled caste groups. Collectively, Christians make up nearly 3 percent of India’s population. A small percentage follows Judaism, which was introduced by early Jewish traders who established settlements in coastal towns, notably Cochin.

Recent Indian censuses have reported only a few million of India’s large tribal population as practicing animistic religions. Nevertheless, there is a strong element ofspirit worship in the religious practices of most of India’s tribes, blended in varying degrees with forms borrowed from Hinduism.

Ways of Life:-

Three fourths of India’s people live in villages. These settlements may contain a thousand or more households, but one hundred to severalhundred families is typical. In northwestern India villages tend to have an almost urban appearance, with tightly clustered dwellings that often form parts of high-walled compounds with few windows facing the street. In the eastern and southern regions the villages are less cramped. The various castes within a village are residentially segregated. The higher and more powerful castes generally have their homes near the center of the village, while the scheduled castes and Muslims, if any, live on its outskirts. In southern India scheduled-caste hamlets half a mile or more from the main village are not uncommon.

In much of India the typical village dwelling is a modest one-story mud hut of one or several rooms. Roofs are generally flat in the dry regions and peaked in areas of heavier rainfall. Most houses have no windows, but many have a shaded veranda where social activities take place. A cubicle or a corner of the yard is set aside for the kitchen hearth, normally containing an earth stove fueled by cow dung or firewood. Furniture is scarce, indoor plumbing is virtually unknown, and electricity is uncommon. Water, brought home from wells, is stored in large clay jars, which are also used to keep perishable foods.

The family:-

Households often consist of more than one married couple. These joint families are usually headed by a senior male, whose wife, mother, or another related senior female assigns domestic chores to the women and girls. Generally the extended family may include his unmarried children, his younger brothers and their wives and unmarried children, his unmarried sisters, and his married sons and grandsons and their wives and unmarried children. In practice, however, brothers commonly separate and form new households soon after the death of their father.

Over most of India (though not in the south or northeast), a girl marries outside her village, usually while still in her teens. Even where a female marries within the village, she moves to the husband’s household. Widow remarriage is frowned upon. Married couples display a marked preference for male children. Boys are desired not only because of their anticipated contribution to the family income but also because sons are needed to perform certain rites at a parent’s cremation. Girls, on the other hand, are seen as a liability because they require expensive dowries when they are married. Various state governments have tried to discourage this practice, but often families still go into debt to provide dowries; a family with several daughters and no sons may face financial disaster. Boys are expected to help in the fields and girls in the home. The freedom that girls enjoy is restricted after they reach the age of puberty; in northern India, even among the Hindus, femaleseclusion is common.

The village economy:-

Most villagers are farmers. The majority own some land, usually in scattered parcels, but a substantial number must rent all or part of the land they farm, either for cash or for an agreed-upon share of the harvest. The amount depends on whether the cultivator or the landlord pays for seed and irrigation water, and on who provides the animals for plowing. Shares typically range from one third to one half the harvest. Many families, especially among the scheduled castes, have no land at all, and both adults and children must sell their labor to the larger farmers.

The simple tools used by most Indian farmers are generally made in the villages. Plows are wooden, with short iron tips. They furrow but do not turn the soil. Draft animals are mainly oxen in the drier regions and water buffalo in the wetter, rice-growing areas. Both cattle and water buffalo are milked, but yields are low. Transportis still largely by oxcart or buffalo cart, though the use of trucks is gaining as a result of road improvement. Tractor cultivation is rare except in Haryana and the Punjab.

Goods and services that are not available locally are obtained from nearby villages, at weekly outdoor markets, in towns and cities, and at fairs, usually held in connection with religious holidays. Payment for goods and services provided within the village may be either in cash or in kind. The latter type of payment, usually a portion of grain at the time of harvest, used to be the customary rule. Most specialized-caste families catered to a particular set of patron families, known as jajmans, with whom they were linked by hereditary ties. This jajmani system is breaking down over most of India, but patron-client alliances among various castes remain a common feature of village life.

Most villages have at least a primary school offering up to six years of instruction. Some also offer adult education classes in the evening. While few villages can support a well-trained doctor, many have practitioners of traditional medicine. Government-aided dispensaries are increasingly common.

For entertainment men join their fellow caste members or those from castes at levels close to their own to pass the evening hours smoking and chatting. Women and girls talk at the village well and may join groups to sing religious songs. Male youths sometimes form sports clubs or drama groups. Village-owned radios set up in public spaces are common, but television is rare. Traveling storytellers, musicians, acrobats, and snake charmers relieve the drabness of life, as do weddings, religious celebrations, trips to local fairs, and occasional religious pilgrimages.

Local government:-

Village government is in the hands of a democratically elected council, known as a panchayat, presided over by a village headman. In former days virtually all panchayat members were men of the upper castes, usually those who owned the most land. Now many states require that a certain number of women and members of scheduled castes be included. Increasingly, elections are held by secret ballot. The panchayats are expected to work closely with the government-sponsored Community Development Program, which has divided the entire country into community development blocks, averaging about a hundred villages each. Village-level workers within each block are the chief links between the government and the villagers. They bring news to the villagers of developments that might benefit them and report back the sentiments of the people.

Urban life:-

Approximately one fourth of all Indians live in urban places. Of these, more than half live in settlements of more than 100,000 people, officially defined as cities. The 1991 census listed 18 cities with over one million people. The three largest—Calcutta, Bombay, and Delhi (including the capital, New Delhi)—had populations of more than five million each.

Indian cities are generally poorly planned and are much more crowded than those of Europe or North America. Streets are narrow, the number of people in residential dwellings is high, and buildings with more than two stories are relatively scarce. The principal activity is retail trade, mainly carried out in small shops in specialized bazaar streets. Many shops combine a handicraft activity, often in a back room, and a sales outlet. The family of the shopkeeper normally lives just behind or above the shop.

Open spaces within larger cities and on their outskirts are likely to contain makeshift squatter settlements, occupied by recent immigrants from the countryside who have come to the city in search of employment. Many people lack any shelter at all and simply resort to sleeping in the streets, especially near railway stations where temporary day laborers are recruited each morning.

In the last few generations, many cities have spawned satellites located a considerable distance away from the densely settled cores. Some housed members of the civil administration during the period of British rule and are still known as civil lines. Others, designated as cantonments, included residences and special areas such as parade grounds set aside for the army. Since India achieved independence, many planned modern suburbs have sprung up. Modern factories, sometimes grouped in government-sponsored industrial estates, have increasingly been located outside the cities.

Like cities everywhere, those of India are centers of education, cultural activities, political ferment, and social change. In the urban setting, the caste and religious barriers that loom so large in the villages are considerably relaxed. Thus, there is somewhat more opportunity for talented individuals to rise in government, modern business, factories, and universities.

Art and Literature:-

The artistic and literary heritage of India is exceptionally rich. Probably most renowned are the country’s architectural masterpieces. These date from many different ages. The ancient Buddhist domed stupa, or shrine, at Sanchi was probably begun by the emperor Asoka in the mid-3rd century BC. The Kailasa Temple at Ellora was carved out of solid rock in the 8th century. The enormous, elaborately sculptured SunTemple at Konarak dates from the 13th century, and the Minakshi Temple in Madurai, with its striking outer towers and inner Hall of 1,000 Pillars, from the 16th century. The sublime Taj Mahal at Agra was built in the 17th century by the Mughal emperor Shah Jahan as a mausoleum for his favorite wife. Every major region and religious group of India has produced works of extraordinary merit. Hindu and Jaina temples are usually richly embellished by sculpture. Because of the Islamic opposition to representative art, mosques are comparatively austere and rely for adornment largely on inlaid stonework, decorative tiles, geometric designs in stone, plaster, or wood, and ornate calligraphy.

Painting is relatively less developed, and much of the work of the past has fallen victim to weather. However, the well-preserved, sensuous cave paintings at Ajanta, dating from the 1st century BC to the 7th century AD, demonstrate great technical proficiency at an early date. Altogether different is the lyric and romantic style of the various schools of miniature painting that flourished in the courts of the Mughals and the Rajput princes in the 16th and subsequent centuries. Modern painting, inspired by both European and Far Eastern models, has had several internationally recognized exponents.

Classical Indian music, dance, and drama are closely linked. Their roots go back nearly 2,000 years. Their mastery calls for great discipline and intensive practice. Each has a conventionalized “language” that demands considerable sophistication on the part of the audience. As with architecture, a number of regional styles have developed. Folk music and dance also show wide regional variations.

The literature of India covers many fields of knowledge, but religious and philosophical texts are particularly numerous. The oldest religious texts, the Vedas (beginning with the ‘Rig-Veda’ around 1500 BC, were transmitted only by word of mouth for many centuries before being committed to writing. For most Hindus the two best-known texts are the great epics, the ‘Ramayana’ and the ‘Mahabharata’, composed roughly 2,000 years ago. The former recounts the adventures of the god-king Rama and provides models of proper conduct for both men and women. The latter, the longest poem ever written, relates a great mythicalwar involving all the peoples of ancient India. The most important portion of that epic, the ‘Bhagavadgita’, is the principal Hindu tract on morality and ethics.

Indian Muslim literature covers a wide range of practical subjects. However, the authority of the Koran, Islam’s holy book, leaves little room for religious speculation. Poetry is particularly admired.

Education:-

Although India can boast the world’s third largest pool of scientifically and technically trained persons, a large percentage of its people—47 percent of the total population—are still illiterate. The literacy rate for females (39 percent) is much lower than for males (64 percent), but the gap between the sexes is being reduced steadily. Similarly, the rural literacy rate is considerably lower than that for urban areas. The central and state governments are attempting to eradicate illiteracy. Thanks to a recent rapid increase in the number of schools, especially in the villages, around five sixths of the children aged 6–11 are now enrolled. However, the proportion falls to roughly two fifths for the 11–14 age group and only one fifth for those aged 14–17.

India’s first three universities, at Calcutta, Bombay, and Madras, were chartered only in 1857. By independence the number of universities in what is now India had risen to 20, and today there are well over 100 with a combined student body of more than 3 million. Most universities have affiliated colleges scattered over a rather wide area. There are few towns of more than 20,000 population that do not have at least one such college.

The colleges have shown a gradual shift toward instruction in the official state languages. This makes higher education accessible to many more people, but it has also meant a decline of proficiency in English. Since postgraduate education is almost entirely in English, this may present a major problem in the future. Another problem, already serious, is the large number of graduates who are unemployed because college and university education has expanded much more rapidly than the economy.

Health:-

In general, the level of health among the Indian population is far from good. Because of impure drinking water and lack of public sanitation, diseases such as dysentery and typhoid are fairly common. Cholera, malaria, filariasis, and other illnesses associated with wet, tropical climates are serious problems. Although few people now starve to death in times of scarcity, many millions are improperly nourished and afflicted by various deficiency diseases.

The government is making considerable efforts to meet the health needs of the people. Thus, the average life expectancy at birth rose from around 32 years in 1951 to 53 years in 1981 and to 60 years in 1992. Immunization programs have greatly reduced the incidence of certain diseases, and smallpox, once a major killer, has been eradicated. A vigorous anti-mosquito campaign came close to wiping out malaria as well, but with the emergence of DDT-resistant strains of mosquitos, the spread of malaria has continued virtually unabated.

The number of government-paid doctors in the countryside has increased substantially, and a network of rural primary-health-care centers is being established. These centers are staffed by “multipurpose health workers” who have taken a short medical course, enabling them to treat many common health problems that do not really need a doctor’s attention. Throughout India there are also practitioners of traditional Indian systems of medicine that are reasonably effective for a number of ailments.

Apart from treating illnesses, the medical profession has been called on to play a major role in implementing India’s family planning program. This involves giving advice to women or married couples who wish to practice birth control and performing sterilization operations on willing men and women. However, a controversial effort to enforce compulsory sterilization in the mid-1970s failed, and the Indian public has been slow to accept the desirability of limiting family size. While the birthrate has fallen significantly in recent decades, it is still dangerously high. At the current growth rate of approximately 2 percent per year, the population of India could double every 37 years.

The Economy:-

Because of low levels of productivity, both per worker and per acre of agricultural land, average incomes in India are among the lowest in the world. Almost all production must go to meet the subsistence needs of the population, and savings and investment are difficult to promote. Hence, the nation finds it difficult to escape from a vicious cycle of poverty. Nevertheless, by a combination of careful economic planning and foreign economic aid India has managed to make remarkable progress since independence. Major sources of aid have been the United States, the Soviet Union, and the World Bank and other international agencies. Because the growth rate of agricultural production has substantially exceeded that of the population, acute famine no longer appears to be a serious threat. Growth in manufacturing has been impressive, and India now ranks among the world’s ten largest industrial nations.

Agriculture:-

The pattern of Indian agriculture varies greatly from one region to another. Almost everywhere, grains form the principal crop: rice in the wetter portions of the east and south, wheat in the north and northwest, sorghum and millets over much of the peninsular interior. Leguminous crops such as gram, often grown with grain, are also widely cultivated, as are various oil seeds. Sugarcane is a highly profitable crop where modern crushing plants are accessible. Certain fruits, especially mangoes, are exceedingly abundant in season. Nevertheless, the total area given over to fruits and vegetables is insufficient to provide most Indians with a balanced diet.

Since the late 1800s Indian agriculture has become much more intensive as efforts were made to obtain the best yield from every piece of land. The first major changes resulted from the development of giant canal irrigation projects, especially in the western Indo-Gangetic Plainand on the Indus Plain, which now is largely in Pakistan. Following independence the government of India accelerated this effort. Multipurpose river basin development projects were established in all parts of the country. As the opportunities for additional surface water projects became limited, the emphasis shifted to irrigation from groundwater, usually by means of deep, cement-lined, power-driven tube wells.

The Green Revolution:-

Another major change has been the spread of new, high-yielding varieties of hybrid seeds. In some areas use of these seeds has multiplied wheat yields several-fold. There have also been impressive gains in rice production. However, these varieties require large inputs of fertilizers, irrigation water, and pesticides. Thus, a whole new technology, popularly called the Green Revolution, is needed. States such as Punjab and Haryana, where the new methods have been practiced on a large scale, have prospered greatly. Other states that have been unable to adapt them are still struggling.

Traditional Indian agriculture was overwhelmingly for subsistence, but from the 19th century onward there has been a great increase in commercial farming. Chief among the cash crops is cotton, which is grown mainly on the black lava soils of the Deccan. Jute, grown for fiber, is important in the Ganges delta area of West Bengal. Plantation crops include tea, grown in the highlands of the far south and northeast; coffee, a southern highland crop; and rubber and coconuts, produced mainly along the southwestern coast. Important specialty crops include tobacco, chilies, various spices, cashew nuts, and betel leaf (pan).

Livestock:-

Because of the scarcity of land and the widely held taboos against eating meat, especially beef and pork, little livestock is raised for slaughter. Mutton from sheep and goats is widely consumed, however, as are poultry and eggs. Animals are economically important for plowing and transportation; for milk and milk products; for leather, skins, and wool; and as sources of dung for fuel and fertilizer.

Fishing and Forestry:-

There are some taboos against eating fish, but they are less prevalent than those against meat. Hence, fishing at sea and in rivers provides a modest supplement to a diet generally poor in protein. Increasingly, rice paddies are being stocked with carp and other fishes. Shrimp have become a significant export.

Forestry is not well developed. Most of the nation’s forests—about 23 percent of the total area—are owned and managed by the state governments. Commercial exploitation is generally carried out by licensed companies. The principal timber species are sal and teak. However, much of the legal cutting and considerable poaching is for firewood and the manufacture of charcoal. Other forest products include wood for pulp, paneling, and matches; aromatic sandalwood; bamboo canes; medicinal plants; lac, which is used in shellac; resins; and tanning and dyeing materials. In a country where paper is scarce, leaves often serve as wrappers.

Mining:-

A great variety of minerals are mined and quarried. Foremost in importance and in value of production is coal, which is mined at many sites but chiefly in the Chota Nagpur Plateau. Coal supplies more than half of India’s energy needs. Petroleum production, from small fields in Assam and Gujarat and the promising offshore Bombay High field, is expanding fairly rapidly, but domestic production meets only half of the demand for petroleum products. Hydroelectricity, an important supplementary source of energy, provides nearly two fifths of the nation’s electrical power requirements. India is a major producer and exporter of iron ore. It also produces several important minerals used in ferroalloys, such as manganese and chromite. Other metals include copper, gold, zinc, lead, bauxite, and silver. Limestone, phosphorite, dolomite, and gypsum are used in the manufacture of cement, fertilizers, and other products. High-quality building stones, gems, mica, andkaolin, or china clay, are produced in significant quantities.

Manufacturing:-

Indian handicraft industries, especially those producing textiles, have been renowned for centuries. Before the Industrial Revolution the products of these industries were avidly sought for European markets. Subsequently, however, millions of artisans in India found it virtually impossible to compete with the cheap products of British mills and lost their traditional forms of livelihood. Before independence attempts were made to boycott British imports, as advocated by Mohandas K. Gandhi. This, together with official support for small-scale industry after 1947, led to some resurgence of handicrafts. In India as elsewhere, however, the economic advantages of large-scale production have forced ever greater reliance on factory production.

The oldest factory industry—and the most important as a source of employment—is the manufacture of cotton textiles. Though mills are found in most parts of the country, they are concentrated along the west coast, from Bombay north to Ahmadabad. India ranks among the world’s principal manufacturers and exporters of cottons. Other textile industries include the manufacture of jute for burlap bags and other uses, concentrated in cities on the Hooghly River north of Calcutta; woolens, in Kanpur (Uttar Pradesh), Amritsar (Punjab), and Srinagar (Jammu and Kashmir); and rayon. In the widespread leather industry, as with textiles, modern factories offer severe competition to traditional craftsmen. In general, modern food industries are poorly developed, mainly because low incomes limit effective demand for their products. Among the exceptions are sugar refining and the processing of vegetable oils, tea, and coffee.

India’s modern metallurgical industry got its start in 1907, when the Tata Iron and Steel Company was established at Jamshedpur (Bihar) on the Chota Nagpur Plateau. In addition to steel, India produces aluminum and copper for further processing. Other major products include machine tools, automobiles, motorcycles, bicycles, railway cars, diesel engines, pumps, and sewing machines, many of them produced for export. The country’s electrical and chemical industries are expanding rapidly.

In the worst industrial accident in history, a highly toxic chemical escaped from a plant in Bhopal in December 1984. More than 3,300 people were killed. In 1989 the plant’s owner, Union Carbide Corporation, paid 470 million dollars in relief to the victims, under the order of the Indian Supreme Court.

Transportation and Communication:-

India’s railway system, begun in the mid-19th century, is an important inheritance from the period of British rule. With approximately 38,000 miles (61,000 kilometers), the government-owned network is the fourth largest in the world. Although the volume of freight carried is not impressive, the number of passenger-miles per year in the late 1980s was surpassed only by those of the Soviet Union and Japan. Trains on main lines offer frequent and efficient service. Few places are more than a day’s walk from a railroad line.

Since independence there has been a great spurt of road building. By the early 1990s the road network had grown to approximately 1,250,000 miles (2,000,000 kilometers), about 42 percent of which was surfaced. Most villages can now be reached by automobile, at least in the dry season. The use of motor vehicles rose correspondingly, but the total was still small: 1,433,000 trucks and buses, 2,284,000 private cars, and more than 12 million motorcycles.

India has the largest merchant shipping fleet among the world’s less developed countries. In the early 1990s it totaled 10.5 million gross registered tons and operated out of ten major and 170 minor ports. Companies engaged in overseas and coastal trade are both publicly and privately owned. Inland water traffic on the several thousand miles of navigable rivers and canals is no longer very important.

Air India, the government-owned international airline, flies to many parts of the world from Delhi, Bombay, Calcutta, and Madras. The Indian Airlines Corporation, alsoa state monopoly, serves virtually all the nation’s cities. For most Indians, however, air travel is no more than a distant dream. A typical family is happy to own a singlebicycle. In the countryside, transportation of goods by cart and pack animals is still the general rule. Human porters are common in the cities, where every conceivable mode of ground transport exists on the crowded streets.

The communications system of India is not well developed. Postal and telegraphic services reach all parts of the country, but service is slow. The telephone system is overburdened and inefficient. The main radio and television services are government operated and noncommercial. Service to the cities is generally adequate, butmany villages do not have a single radio. Television is virtually unknown in rural areas, except in the vicinity of a few major cities. Plans are under way, however, for satellite transmission that will reach more parts of the country.

Motion pictures are an especially powerful and popular communications medium. Open-air cinemas are features of fairs, and no town of any size is without a movie house. In some years India is the world’s leading film producer. Several hundred feature films are released annually in a variety of regional languages. Most are escapist adventures and love stories, in color, with a number of dance and song sequences. However, some Indian filmmakers, like Satyajit Ray, have achieved international acclaim.

The vigorous Indian press provides about 16,000 newspapers, including more than 2,000 dailies. The English-language press is still the most prestigious and influential, but newspapers in Indian languages have been gaining rapidly in readership.

Government:-

India’s present constitution went into effect on Jan. 26, 1950. At that time, the nation changed its status from a dominion to a federal republic, though it remained within the Commonwealth. The governor- general, appointed by the British Crown, was replaced by a president, chosen by an electoral college. The president is the official chief of state, but the office is largely ceremonial.

Laws are enacted by a Parliament consisting of two chambers—the popularly elected Lok Sabha, or House of the People, with not more than 545 members and the Rajya Sabha, or Council of States, with not more than 250 indirectly elected members. The prime minister is elected by the majority party or coalition in Parliament and then formally appointed by the president. Executive power is exercised by the appointed Council of Ministers, or cabinet, under the leadership of the prime minister. Elections to the Lok Sabha are held at least every five years; if there is a vote of no-confidence in the prime minister’s government, the president must call for new elections. The Supreme Court decides on the constitutionality of federal laws, handles disputes between the central government and the states or between the states themselves, and judges appeals from lower courts.

India consists of 25 states and seven union territories. The governments of the states are organized in much the same way as the central government. The federal constitution gives the states control over certain issues, such as agriculture, and retains control over almost 100 others, such as foreign affairs. There is a third list ofsubjects, such as price control, on which both the central and state governments may pass laws. The union territories are controlled directly by the central government. The most important of these territories is Delhi, which includes the capital, New Delhi, and the rest of the Delhi metropolis.

The federal constitution includes a lengthy list of fundamental rights. It guarantees freedom of speech and religion, among many other rights, and abolishes untouchability. It also specifies a set of Directive Principles of State Policy, designed to guide the government in the interests of the people. In periods of national emergency, which only the president can declare, the government may legally suspend certain rights for a limited period. Such an emergency was in force in India from June 1975 to March 1977.

Party politics are energetically pursued at both the national and state levels. There are many parties, and their orientations are diverse. The Indian National Congress, or its dominant faction, has governed India since independence except for the three years from 1977 to 1980. It has been committed to a form of democratic socialism, with a mixture of private and state enterprise. Several other Socialist and Communist parties are ideologically to the left of Congress, while other parties are to its right. In addition, there are a number of parties that represent the interests of particular regions, language groups, and religions. With so manyparties contesting Parliamentary elections, independent candidates have a fairly good chance of being elected. Despite the high level of illiteracy, voter turnouts in Indian elections are normally large.

In foreign affairs India tried to maintain a policy of nonalignment in the political rivalry between the United States and the Soviet Union during the Cold War. It supported independence movements in areas subject to colonial rule, opposed racism in South Africa and elsewhere, and championed the nations of the Third World in their economic dealings with the affluent countries of Europe, North America, and Japan. India has played a prominent role in the United Nations and in many of its specialized agencies.

History:-

Archaeological excavations at Mohenjo-daro and Harappa (both in Pakistan) reveal the existence of a civilization in the Indus Valley as long ago as about 2500 BC. The remains show that an urban manner of living had developed in which the people had wells, bathrooms, drainage systems, handsome jewelry, and well-made household utensils and copper weapons. The Rig Veda, composed in about 1400 BC, tells of the struggle between the Aryan invaders and the prior occupants of the land. By the 6th century BC at least 16 Aryan states had been established south of the Himalayas, and Brahmanism was flourishing.

In 326 BC the armies of Alexander the Great reached the Hydaspes River, the modern Jhelum. Soon after Alexander’s death in Babylon in 323, Candragupta founded the Maurya Empire. His grandson Asoka adopted Buddhism, then a relatively small sect, and energetically promoted that faith. Under Asoka the Maurya Empire extended over all India except the extreme south, but it began to break up shortly after his death. Candra Gupta I, who reigned from AD 320 to 330, was the founder of the imperial dynasty of the Guptas, which flourished until the mid-6th century. The Gupta Dynasty marked the peak of classical Indian civilization.

A succession of invaders, notably the Kushans, Sakas, and Ephthalites, or White Huns, penetrated the subcontinent during these centuries. Mongol forces of Genghis Khan made raids into Punjab in the 1200s, and in 1399 Timur Lenk’s hordes poured in. In 1526 Baber, a descendant of Genghis Khan and Timur Lenk, came through the northwest passes from Afghanistan and seized the throne of Delhi, establishing the great Mughal Empire. This remained almost continuously powerful until the early 1700s. The south of India was never completely conquered, but the empire of the north, under such rulers as Akbar and Shah Jahan, was among the most brilliant in the history of the Orient. During the reign of Aurangzeb, the last of the great Mughals, from 1618 to 1707, the Marathas of the Deccan undermined the Mughal Empire.

Arrival of the Europeans:-

Meanwhile, the struggle between European powers for dominance in Indian affairs had begun. In 1498 Vasco da Gama, the Portuguese navigator, discovered the ocean route around the Cape of Good Hope, and by the early 17th century the Dutch, British, and French began to challenge the Portuguese for the Indian trade. In 1600 the British East India Company was chartered, and within a century it had trading posts at Madras, Bombay, and Calcutta (then called Fort William). The French organized local troops, and their role in the quarrels of Indian rulers brought much of the Deccan under French influence by 1751.

British presence in India was threatened with extinction, but the genius of Robert Clive turned the tables. His storming and subsequent defense of Arcot in 1751 and his victory at Plassey in 1757 overthrew the French power and laid the foundations of the rule of the British East India Company. Later, trading rights gradually grew into political rule. It was a strange conquest, in which a private trading company conquered an empire chiefly through the use of soldiers (Sepoys) raised in the land itself. Warren Hastings, who became governor-general for the East India Company in 1774, built upon the foundation Clive had laid. By 1849 the rule of the company had been extended over virtually the whole of the subcontinent by conquest or treaties.

Certain high-handed methods used by the British company, as well as the teachings of missionaries and the introduction of European customs, now stirred a great wave of unrest. In 1857 a rumor was circulated among the company’s Indian soldiers that the cartridge papers they had to tear with their teeth were greased with the fat of cows and pigs. The cow is sacred to Hindus, and the pig is abhorred by Muslims. This rumor started the great Sepoy Revolt, or Indian Mutiny, of 1857. The outbreak, though crushed, ended the powers of the East India Company. In 1858 the administration was transferred to the British Crown. In 1876 the British Parliament ruled that India should be designated an empire. The next year Queen Victoria was crowned empress of India.

The Indian Empire:-

The viceroy of India, appointed by the crown, ruled directly only in the provinces of British India. Hindu and Muslim princes continued to govern almost 600 native, or princely, states. These were nominally autonomous, but they were forbidden to make war on one another, and the viceroy kept an agent at each court to advise the ruler.

British rule brought internal peace and some economic development. The British built roads and railways, canals, irrigation works, and mills and factories. They introduced Western law and police systems, modernized cities, and built schools. Most British civil service personnel were able, though their aloofness aroused resentment. Indian intellectuals, many of them educated in England, began to dream of a free India. In 1885 they founded the Indian National Congress to further the participation of Indians in their own government.

The Struggle for Independence:-

During World War I Indian troops served the British loyally, but nationalist agitation increased afterward. The British Parliament passed a reform act in 1919, providing for provincial councils of Indians with some powers of supervision over agriculture, education, and public health. Far from satisfied, the extreme nationalists, led by Mohandas K. Gandhi, gained control of the Congress. Gandhi preached resistance to the British by “noncooperation” (see Gandhi, Mahatma). Hundreds of thousands joined his civil disobedience campaigns. The Congress party quickly gained a mass following.

Rioting broke out when Parliament placed no Indians on the Simon Commission, appointed in 1927 to investigate the government of India. The British imprisoned Gandhi and his associates. In 1929 Jawaharlal Nehru was elected president of the Congress. Like Gandhi, Nehru was passionately devoted to the cause of freedom. He had absorbed Western ideas at Harrow and Cambridge, however, and, unlike Gandhi, wanted to bring modern technology and industrialization to India.

After three “round-table” conferences in London had considered the commission’s report, Parliament passed a new Government of India Act in 1935. It provided for elected legislatures in the provinces, but property and educational requirements restricted the number of voters to about 14 percent of the population. To protect the interests of minorities, voting was by communal groups. Upper-caste Hindus, Untouchables, Muslims, Sikhs, and others voted for their own candidates. The system perpetuated religious strife. Mohammed Ali Jinnah, leader of the Muslim League, charged that Congress ministries mistreated their Muslim minorities (see Jinnah, Mohammed Ali). He agitated for the separation of the Muslim provinces from India and the creation of a state called Pakistan, which means “country of the pure.”

When World War II broke out, the Congress demanded complete and immediate freedom for India as the price for India’s active participation. In 1942 Sir Stafford Cripps went to India with a plan for granting dominion status after the war, but Indian leaders could not agree on the terms. The Congress insisted on a unified India.The Muslim League demanded a separate Pakistan. The princes were determined to preserve their states.

The Japanese invaded northeast India from Burma with a small force in the spring of 1944. It was quickly driven out. In spite of opposition to British rule, India raised a volunteer army of nearly 2.5 million. Its industries expanded greatly to supply arms and other goods for the war effort.

Birth of the New Nations:-

In February 1947 the British government announced that it would leave India not later than June 1948. Muslim threats of civil war then forced the Hindu leaders to agree to the establishment of the separate state of Pakistan. The British Parliament rushed through the Indian Independence Act in July. On Aug. 15, 1947, the Indian Empire came to an end.

The two new dominions—India and Pakistan—had complete self-rule. Though they remained in the Commonwealth, they were free to withdraw. India took over the Indian Empire’s membership in the United Nations. Jinnah became the first governor-general of Pakistan. Nehru, a moderate socialist, took office as India’s first prime minister.

The boundaries between India and Pakistan were drawn so as to separate Muslims from Hindus and Sikhs. The Punjab, Bengal, and Assam were split in two. Yet some 38 million Muslims remained in India and about 19 million Hindus and more than 1.5 million Sikhs were left in Pakistan. Rioting broke out. Millions poured across the borders to the country of their own faith. Hundreds of thousands were massacred or died of other causes while migrating. Hundreds of villages were burned in communal strife.

On Jan. 30, 1948, Gandhi was assassinated by a fanatical member of a militant Hindu group that disapproved of his efforts toward reconciliation. Hindus and Muslims alike mourned his death. The Indian government immediately acted against the extremist group, and violence subsided. In 1950 the two nations agreed to protect their religious minorities. By 1951 about 7.2 million Hindus and Sikhs had fled from Pakistan into India and 7.4 million Indian Muslims had entered Pakistan. Additional millions crossed later. Religious strife and violence persisted for decades, however, in spite of these migrations.

Status of Princely States and Foreign Areas:-

The Indian Independence Act applied only to the provinces of British India. The 562 native states were left outside both dominions. A few joined Pakistan. The rest were brought into India. Hyderabad, the largest princely state, insisted on remaining independent. India sent in troops, and in November 1948 it became a part of India.

Both India and Pakistan coveted Jammu and Kashmir, a large princely state in the far north. When troops entered the state from Pakistan, the ruler of Kashmir joined his state to India and asked for India’s help. For 14 months the two countries waged an undeclared war in Kashmir. The fighting ended on Jan. 1, 1949, when both agreed to permit the United Nations to hold a plebiscite in the state. It was never held. India and Kashmir announced in 1957 that Kashmir’s accession to India was permanent, but it was not recognized by the United Nations. Part of it remains occupied by Pakistan.

When Britain withdrew from India, Portugal ruled Goa and several other territories on India’s west coast with a total area of 1,472 square miles (3,813 square kilometers). France held Pondicherry and a number of other small areas totaling 196 square miles (508 square kilometers). Between 1950 and 1954 France’s colonies were merged with India. The Portuguese possessions were seized by India in 1961.

India Under Nehru:-

In 1949 India adopted a new constitution. It became effective on Jan. 26, 1950. India then became a republic, though it remained in the Commonwealth. Nehru, the best-known leader of the independence movement next to Gandhi, served as prime minister until his death in 1964. During that time he succeeded in putting his imprint on the new nation. His guiding principles in domestic affairs were democracy, socialism, unity, and secularism. In foreign policy, he attempted to steer a nonaligned course between the Communist and the non-Communist powers, hoping to maintain peaceful relations with all nations. Unlike Gandhi, Nehru favored industrialization, and under his leadership India made substantial progress. Under the first two five-year plans (1951 to 1956 and 1956 to 1961) national income rose 42 percent. Great strides were made in the steel, electric power, cement, and fertilizer industries.

As the vehicle of independence, the Congress party enjoyed great prestige, and throughout this period it maintained a firm grasp on the national government. As the state boundaries were redrawn to accommodate various language groups, however, parties emphasizing local and regional issues assumed increasing importance in state governments. In 1957 a Communist government took office in Kerala. Internationally, Nehru’s efforts to maintain India’s nonaligned course were made difficult by the Cold War between the Eastern and Western power blocs and by the continuing dispute with Pakistan. In 1962 a border dispute with China erupted into deep thrusts by Chinese troops into the Ladakh region of Kashmir and the North East Frontier Agency (now the union territory of Arunachal Pradesh). However, the Chinese subsequently withdrew to the areas they had controlled before the conflict.

Nehru’s last years were marked by failing health. At the same time, the economy was losing momentum, and the Chinese incursion had wounded Indian pride. Nehru died in May 1964.

Rule of Indira Gandhi:-

Lal Bahadur Shastri succeeded Nehru as prime minister. In 1965 the quarrel with Pakistan over Kashmir flared into heavy fighting. After three weeks United Nations intervention brought about a cease- fire. On Jan. 10, 1966, the heads of the two nations signed a pact aimed at a peaceful settlement of the Kashmir dispute. The following day Shastri died. He was succeeded as prime minister by Indira Gandhi, Nehru’s daughter (see Gandhi, Indira).

In 1967 and 1969 the Congress party suffered serious election losses, and in 1969 it split. However, the Congress (Ruling) party, led by Prime Minister Gandhi, captured two thirds of the seats in the Lok Sabha in 1971. Gandhi’s popularity reached a peak in December 1971 when India won a brief war with Pakistan, fought in support of East Pakistan’s struggle for independence (see Bangladesh). Afterward, she was accused of despotic behavior, and in 1975 the courts voided her 1971 election to the Lok Sabha because of improper procedures in her campaign and barred her from holding elective office. She responded by declaring a national state of emergency. The harsh measures carried out under it, together with a controversial mass sterilization program, contributed to her defeat at the polls in 1977. In late1978 she was expelled from Parliament and was briefly imprisoned.

The victorious Janata (People’s) party, actually a coalition of non-Communist parties, had difficulty governing. Prime Minister Morarji Desai resigned in July 1979. A month later his successor, Charan Singh, also resigned, and the president called for new elections. In January 1980 Gandhi, leading a new faction called the Congress (I)—the “I” for Indira—won a remarkable victory and returned to power.

A continuing domestic problem was the resistance of the tribal peoples to central government rule. Resentment in Assam against Bengali refugees who had settled there over several decades led to a massacre in 1983 in which more than 1,000 people were killed.

Also in 1983 the government took direct control of Punjab, where militant Sikhs repeatedly clashed with Hindus. To fight the movement for an independent Sikh nation, Gandhi sent troops into Punjab in June 1984. They invaded the Golden Temple, the holiest Sikh shrine, and killed more than 400 Sikhs. On Oct. 31, 1984, twoSikh guards shot and killed Gandhi in revenge as she left her home in New Delhi. Her surviving son, Rajiv Gandhi, was chosen as prime minister. General electionsin November 1989 brought the defeat of Rajiv Gandhi. Officials in his government were accused of taking kickbacks from the Bofors Company of Sweden in a purchase of guns for the army. Vishwanath Pratap Singh, leader of the Janata Dal party, was sworn in as prime minister on Dec. 2, 1989. Earlier in the year the votingage had been lowered from 21 to 18, thus enlarging the electorate by about 50 million. In March 1990 India withdrew the last of its 50,000 troops from Sri Lanka. The peacekeeping force failed in its three-year effort to reconcile the Tamils with the majority Sinhalese. Chandra Shekhar replaced Singh in November 1990 but resigned four months later. Campaigning to return to office, Gandhi was killed by a bomb blast on May 21, 1991.

Changes in Leadership and Nuclear Proliferation:-

P.V. Narasimha Rao became prime minister after the Congress party triumphed in 1991 elections. The country’s religious tensions were enflamed in December 1992 when a Hindu mob destroyed a centuries-old Muslim mosque built on a Hindu sacred site in Ayodhya. Hundreds were killed in the ensuing riots that broke out in cities across India. Elections in 1996 brought a coalition of 13 center-left regional parties to power in parliament. H.D. Deve Gowda became prime minister. Gowda served only 10 months in office; he was removed from power when he failed to win a vote of confidence from India’s Parliament. In April 1997 Inder K. Gujral was chosen by the governing coalition to take over the position of prime minister. In July 1997 K.R. Narayanan, a 76-year-old public servant, was elected to serve as the president of India. Narayanan became the first member of the long-oppressed scheduled castes (once pejoratively called “untouchables” by higher castes in India’s rigid Hindu caste hierarchy) to serve as the president of India. At celebrations held in August 1997 marking the 50th anniversary of India’s independence from British rule, Gujral and Narayanan stressed the importance of restoring peaceful relations between India and Pakistan. Both leaders also announced their intentionsto continue fighting government corruption.

Just over seven months after Gujral was chosen to lead the governing coalition, sharp internal divisions within the United Front coalition brought about the collapse of Gujral’s government. Gujral resigned from office in late 1997. Parliamentary elections began in February 1998, sparking incidents of violence in ethnically divided regions across the country. The Hindu nationalist Bharatiya Janata party (BJP) won the largest share of seats in the Lok Sabha, the lower but more powerful of India’s two legislative bodies, and Atal Behari Vajpayee, the BJP leader, became the 16th prime minister in India’s history.

Shortly after assuming power, the BJP-led government of Prime Minister Vajpayee sparked an international controversy when it conducted a series of underground nuclear weapons tests in May of 1998. The tests, the first conducted since India’s first and only detonation of an atomic device in 1974, violated a de facto international moratorium on nuclear testing and brought sharp condemnation from the international community.

Bharatiya Janata party officials expressed concern over possible future aggression from neighboring states to justify their controversial decision to conduct nuclear weapons testing. While Indian officials insisted that they had rekindled the country’s long-dormant nuclear weapons program for defensive purposes alone, members of the international community expressed concern that the Indian weapons test would spark an arms race—and possible nuclear confrontation—between India and regional rival Pakistan. Concern over a possible arms race on the Indian subcontinent heightened on May 28, 1998, when Pakistan—citing a need to ensure security in the face of Indian aggression—conducted its own series of nuclear weapons tests.

Tensions between India and Pakistan remained high during most of the summer of 1998, as the two countries continued to vie over the borders of the disputed Kashmir region. In August and September of 1998, however, Indian Prime Minister Vajpayee and his Pakistani counterpart Nawaz Sharif conducted several face-to-face diplomatic meetings designed to lessen tensions between the two countries. Those negotiations proved fruitful, as the two nations announced in the fallof 1998 that they would abide by international efforts to end nuclear weapons testing. The two leaders also negotiated a series of measures to improve communication between the two nations and decrease the likelihood of future military conflict.

Despite the goodwill sentiment generated by the summit meetings between Vajpayee and Sharif, tensions continued to mount between the two countries during the first half of 1999. In early April, the Indian government once again raised the stakes in its rivalry with Pakistan by conducting tests of a long-range missile capable of striking Pakistan. Pakistan responded by undertaking its own missile tests. Tensions between the two countries were escalated further in May of 1999, when some 600 pro-Pakistan insurgents infiltrated into the Indian-controlled portion of Kashmir. Indian officials denounced the incursion as a direct act of aggression on the partof the Pakistani government, while Pakistani officials denied providing any assistance to the militants. The infiltration prompted the Indian government to launch air strikes against the insurgents, marking the first time that the India air force had conducted attack operations in Kashmir since its 1971 war with Pakistan over the territory. Concern over a deterioration in the region prompted the two governments to agree to a new round of diplomatic discussions concerning the future of Kashmir. Indian officials, however, insisted that they would convene discussions only after their military operation was successfully completed.

Government Crisis:-

As tensions between India and Pakistan increased, internal dissent also threatened the stability of the Indian government. In April of 1999, the government of Prime Minister Vajpayee collapsed after losing the support of a small but crucial junior coalition member. Officials from the BJP-led coalition accused the rival Congress party of maneuvering to bring down the government.

Following the government collapse, the Congress party tried unsuccessfully to form a new coalition government under party leader Sonia Gandhi—the Italian-born widow of former prime minister Rajiv Gandhi and daughter-in-law of Indira Gandhi. Burdened in part by concern over her non-Indian heritage, Gandhi failed in a bid to piece together a coalition capable of securing power in the Lok Sabha. Faced with a government impasse, Indian President K.R. Narayanan called for a new round of elections to the Lok Sabha to be held in late 1999. Political analysts expressed concern that the new round of elections, the third set of national elections in four years, would likely produce a sharply divided lower house of Parliament devoid of a clear-cut winner. Such a course of development would likely leave India with yet another in a series of weak governments dependent on the support of often-opposed factions to maintain power.

Biogeography

Introduction:-

Biogeography is the study of the patterns of distribution of animals and plants. It looks for general principles to explain how and why organisms are distributed the way they are locally or regionally as well as worldwide. Biogeography uses information from ecology and evolutionary biology as well as from geology (study of origin and structure of the Earth), paleontology (study of fossils), and climatology (study of the world’s climates).

Although the major patterns of distribution and broad principles of biogeography have been established, many specific questions remain to be answered. These questions relate primarily to the unique distribution of certain organisms. For example, hundreds of species of lungless salamanders are widespread in the Western Hemisphere, but only two species are found in the Old World, in Italy and France. How do such differences in populations occur? Biogeographers also ask questions about the importance of environmental factors, such as climate, or physiographic features, such as mountain ranges, in affecting the dispersal of organisms and the colonization of a region. Recently, biogeography has focused on human activities that have influenced distribution patterns by causing the rapid extinction of some species and the introduction of others to regions where they never occurred before. Human impact on some biogeographical patterns has been great and often unexpected.

Historical Background:-

The earliest explorers were aware of broad patterns worldwide of animal and plant distribution as they discovered new lands and found unknown varieties of plants and animals. Charles Darwin recognized and reported on the significance of geographic distribution patterns. In 1859, in his classic book ‘On the Origin of the Species’, Darwin devoted two chapters to plant and animal distribution. He noted that each continent or region had representative and distinctive species, yet each species possessed some qualities and characteristics in common with other species in similar environments in other places. Darwin attributed the observed distribution patterns to a composite of factors, including (1) extinction of the common ancestors of present-day species, (2) changes in climate over geologic time, (3) extinction of species in the central part of a geographic range resulting in disjunct (separate) populations of the same species, and (4) the process of natural selection operating on the variation within a species so that new forms evolved under different climatic conditions. These basic principles are accepted today by biologists.

Alfred Russel Wallace, a contemporary of Darwin, recognized the dynamic aspects of biogeographical patterns. He wrote two major works on the subject. In ‘The Malay Archipelago’ (1869) he discussed the animals of that region. He recognized the fauna (animal life) of Celebes, New Guinea, and Australia as distinctive and separate from the fauna of Borneo, the Sunda Islands, and the Malay Archipelago. The boundary line, from the Philippines south, that separates the two faunal units is called Wallace’s Line by modern biogeographers. Wallace’s ‘Geographical Distribution of Animals’ (1876) was the first thorough presentation of the present distribution of animals throughout the world.

During the last century several schemes of biogeographical distribution patterns have been presented and refinements have been made on the observations and explanations of regional patterns. Except for an increase in detailed knowledge of the worldwide distribution of particular organisms, both living and fossil, few theoretical advances have been made beyond the general ideas and explanations presented by Darwin and Wallace.

Continental Drift:-

A key to the modern distribution of a species of plant or animal is the site of its ancestral origin. But the origin of many organisms was a puzzle until the significance of continental drift to biogeography became apparent.

Continental drift, the separation of major landmasses over geologic time, is now accepted by most scientists. For example, an ancestral species may have arisen in central Gondwanaland—a large ancient landmass that included the areas that later drifted apart to become Africa, South America, and Australia—and be represented today by descendants on these widely separated continents.

Although current geological theories do not agree on the precise timing and order of continental drift, it is generally believed to have caused the breakup of a single landmass, Pangaea, over the last 200 million years, into all of the modern continents and subcontinents. Pangaea was the major nonoceanic habitat at the beginning of the Triassic Period of the Mesozoic Era, 245 million years ago. Pangaea was a compact landmass of all of today’s continents.

By the beginning of the Jurassic Period, 208 million years ago, Pangaea had separated into northern (Laurasia) and southern (Gondwanaland) landmasses. Laurasia eventually became North America, Europe, and Asia. Antarctica, India, and Australia had begun to shift away from Gondwanaland by this time. At the beginning of the Paleocene Epoch in the Cenozoic Era, 65 million years ago, Gondwanaland separated into South America and Africa, and Madagascar drifted free of Africa. Australia and Antarctica remained a single landmass, and North America and Eurasia were still connected at the site of the present Bering Strait.

From the end of the Mesozoic Era to the present, the continental landmasses drifted to their present locations and continued to drift. Because of volcanic uplifting andthe northward drift of the southern continents, South America ultimately became connected by Central America to North America, while Africa and India each became connected to Asia, with the Himalayas forming at the northern edge of India. Another major development was the breaking up of Antarctica, which moved toward the South Pole, and Australia, which moved toward the equator.

Although these geologic changes occurred over 200 million years, the time interval was short enough for some particularly well-adapted groups to show little evolutionary change. Thus, the side-necked turtles, an ancient group that has changed little in structure since Jurassic times, presumably developed throughout Gondwanaland during the Jurassic Period and today can be found in parts of South America, Africa, Madagascar, and Australia, but in no other parts of the world. Groups such as the mammals evolved more rapidly in the last 100 million years, so that land areas isolated from each other through the separation of continents may have widely different forms of mammals. For example, the marsupials of Australia are very distinct from mammals of other continents (except for a few Western Hemisphere representatives such as the opossum, Didelphis marsupialis). Understanding the patterns of continental drift has greatly increased the understanding of the distribution patterns of today’s plants and animals.

Climatic Life Zones:-

Although the present distribution of organisms depends on their ancestral distribution and evolution over geologic time, certain environmental factors have also played a role. The most apparent general environmental factor affecting the distribution of a species is climate. Suitable conditions of temperature and moisture are vital to all organisms.

Certain species are intolerant of cold; other species cannot live in warm climates. Some have evolved to withstand extreme drought; others are adapted to excessively wet conditions. Temperature, precipitation, and other environmental factors such as soil type and day length, determine if a species can survive in a given region.

The major recognizable life zones of the continents are called biomes. Because vegetation is usually the dominant and most apparent feature of the landscape, the plant community is the recognized biological unit used to describe biomes.

Biomes represent the large-scale general patterns of plant and animal distribution and do not include regional variations. Biologists disagree on the absolute number of biomes because of environmental gradients between areas and because of local variations caused by mountain ranges or large lakes. However, six major biomes are generally recognized. They are tundra, taiga, temperate deciduous forest, tropical rain forest, grassland and savanna, and desert. Most of these can be subdivided in several ways as a result of regional environmental variability. Each also is characterized by a flora and fauna that are adapted to the climatic conditions and that reflect the overall environmental nature of the biome.

Tundra:-

This is the area of northern North America, Europe, and Asia where the deeper soils remain frozen most of the year. Life abounds in the tundra during the warmer months, but only those species especially adapted to long frozen winters and cool summers can survive. The number of species is low compared to other biomes.

Tropical Rain Forest:-

As the name implies, this biome occurs in high rainfall, warm temperature areas near the equator. Northern South America, parts of Central America, much of equatorial Africa, southeastern Asia, the East Indies, and northern Australia have extensive tropical rain forests. They are the most biologically complex communities in the world. Species numbers and interactions among species surpass those of any other terrestrial environment, and representatives of many plant and animal groups are found only in tropical rain forests.

Grassland and Savanna:-

In temperate or tropical regions where precipitation is sparse or erratic, grasses are the dominant plants. Central North America and Central America, much of central and eastern South America, large portions of Africa south of the Sahara Desert, and north-central and eastern Asia, are major grassland/savanna biomes. They are characterized by immense, nearly treeless plains in which the grass cover is broken only by occasional hillocks and dales, which accommodate a limited number of other vascular plants. A wide variety of animal species occurs in grassland areas, some of the more apparent ones in great numbers (North American bison and African zebras). Birds are less abundant than in forested biomes.

Desert:-

Major portions of the world receive so little annual rainfall that even grasses cannot survive. Deserts occupy significant parts of every continent except Antarctica. The southwestern United States, northeastern Brazil, and parts of Chile and Argentina have notable deserts.

The largest hot desert in the world is the Sahara of northern Africa. Desert conditions extend from the Sahara across Asia into Mongolia and central China. The upper Temperate Zone deserts have cooler conditions, but the limited rainfall does not permit extensive vegetative growth.

Characteristic desert plants such as cacti (Cactaceae) and euphorbias (Euphorbiaceae) have adapted to withstand intense heat and permanently low moisture levels. Desert animals, such as snakes, lizards, and small mammals, are adapted to desert life by being active at night (nocturnal) or twilight (crepuscular; early evening or dawn) and having ingenious ways of retaining water. The number of animal species inhabiting desert areas is higher than is apparent because of their secretive habits.

Other biomes:-

A variety of smaller biomes are also recognizable as a result of regional variations in soil, weather, and altitude. The biome concept should be looked upon as a useful but general scheme based on similarities of vegetation types. Exceptions may occur frequently within a biome because of local environmental variation or past events.

Factors Affecting Distribution:-

Prehistoric distribution, evolutionary history, and climate are prevalent factors influencing the distribution patterns of plants and animals of today. A variety of other factors also affect regional distribution of species. These factors differ greatly in their impact, depending upon the timing of events and the biology of the species involved. The following are some of the factors considered by biogeographers.

Environmental barriers:-

Sometimes environmental barriers influence the distribution of species by making a region inaccessible to a particular group. For instance, a high mountain range mayprevent migration of ground-dwelling species between two areas. Open ocean is an obvious and significant environmental barrier between landmasses. Biomes themselves can even serve as environmental barriers, one of the most famous being the Sahara Desert, which ecologically separates central from northern Africa. In attempting to explain the distribution patterns of organisms, biogeographers use ecology, geology, and evolutionary biology to determine the relative importance of environmental barriers.

Dispersal mechanisms:-

Biologists are interested in the ways different species overcome environmental barriers and colonize new areas. The degree of mobility of organisms and the methods for dispersal of eggs or seeds are important in distribution. Many plants have seeds that are carried for long-range dispersal by wind, water, or animals. For instance, palms are found on most tropical islands because the coconut floats, carrying the seeds long distances. Many birds and mammals are capable of migrating long distances. The study of dispersal mechanisms involves examining the structure (morphology), function (physiology), and behavior (ethology) of animals. Such studies are important in understanding how new areas are colonized by various species.

Evolution and speciation:-

Plants and animals have evolved into new species that are further and further removed from the original ancestral stock. Information from the fossil record and from present-day affinities between species helps to interpret the evolution of species. Such information indicates where a species or its ancestors may have occurred in thepast. The study of fossil organisms (paleontology) and ways in which organisms can vary and evolve (evolutionary biology and genetics) is used to make these biogeographical interpretations.

Invasion and competition:-

Competition between species for the same food sources or for the same habitats is significant in the distribution of organisms. Although competition is a complex biological phenomenon, many biologists consider it a key factor in modern biogeographical patterns. A classic example is the case of many South American mammals that have become extinct during the last 15 million years. Biologists believe that the South American mammals could not successfully compete for resources with North American species, which invaded via the Central American land bridge and gradually replaced the southern forms.

Human influence:-

Today’s distribution patterns are in great part a product of human intervention, whether intentional or accidental. House sparrows and starlings, originally species of Europe, have become a dominant part of the bird population of the eastern United States. The European hare, introduced into Australia, has successfully colonized many areas of the continent. Although monkeys do not occur naturally anywhere in Europe, a colony of Barbary apes lives on the Rock of Gibraltar, established there by the British more than a century ago.

The South American water hyacinth and the Oriental kudzu vine are considered pests in the southeastern United States because of their invasion of the region following human introduction. These instances represent some of the thousands of human introductions of plants and animals to new regions. Although most species introduced from one continent to another do not fare well and eventually become extinct without human care, some are extremely successful and may replace native forms to the extent of becoming unwanted pests.

Besides the transcontinental introduction of species, transplants to different regions on the same continent are also common. For example, rainbow trout, native to rivers along the northwestern coast of North America, have been successfully established in coldwater streams of the central and eastern United States. Because of its commercial importance since ancient times, the date palm has been distributed throughout North Africa and the Middle East to places, including isolated oases, where it might never have reached without human assistance.

The extinction of many species has resulted from human activities as well. In historical times, humans have eliminated the dodo bird, the passenger pigeon, and theCarolina parakeet, to name but a few. Hundreds of other species including the Chinese alligator, the mountain gorilla, the Indian rhinoceros, and the California condor are seriously threatened with extinction. Although extinction and the gradual replacement of species by others is a natural phenomenon, man’s worldwide and rapid impact has greatly accelerated the process and evolutionary replacement has not had time to occur. Many of the modifications brought about by the introduction of species to new areas and the inexorable extinction of others are irrevocable.

Island and Marine Bio geography:-

Because they are small geographic units with distinct boundaries, islands serve as useful models to illustrate the mechanisms of biogeographical phenomena. In recent years intensive ecological studies on islands have provided new insights into invasion and colonization patterns, dispersal mechanisms, and extinction rates of organisms. Ecologists have documented that the amount of usable habitat on an island will dictate the number of species of any group of organisms that can be supported. Careful mathematical formulations have shown that islands reach an equilibrium state in which the rate of incorporating immigrant species into the island’sflora and fauna equals the rate of extinction of resident species. These findings have obvious implications for land management of actual islands or mainland areas that are isolated from similar habitat types.

Ocean environments have not received the level of attention that terrestrial habitats have from a biogeographical point of view. Two factors are involved. The environmental gradient in marine systems is seldom as abrupt as in terrestrial systems, so that distinct groups of organisms are not as recognizable; and the oceans of the world are continuous so that migration between areas and mixing of species are likelier. Because of these differences between land and sea habitats, isolation of major groups from each other is less likely to occur. A final problem in marine biogeography is the historical one: simply, very few comprehensive studies have been done.

Biology

Introduction:-

All of the processes associated with living organisms are the subject matter of the science of biology. Biologists strive to understand the natural phenomena associated with plants and animals by asking why and how the natural world functions as it does. Why do living organisms interact with each other and their environments in particular ways? What are their evolutionary and genetic relationships? How are biological processes carried out within organs, tissues, and cells? In order to answer these broad questions biologists must answer many specific ones: How does the liver of an animal break down fat? How does a green plant convert water and carbon dioxide into sugar? Where do mosquitoes go in the winter? When do platypuses lay their eggs?

Some questions require years of scientific research before they can be answered satisfactorily. Today many mysteries remain unsolved, but study leads toward a betterunderstanding of plants and animals.

HISTORY:-

As early as between 3000 and 2000 BC the major civilizations of China, Egypt, and India had knowledge of certain biological processes, primarily those associated with the practical aspects of agriculture and medicine. For a long time biological learning continued to focus on medically related issues. It was with the Greeks that a formal consideration of basic biology began. In the 4th century BC Aristotle presented a system for classifying the animals of the world based on similarity of structure and function. His student Theophrastus drew up a scheme for classifying many of the plants. In later centuries the effects of Greek learning diminished in Europe, though during these Dark Ages biology continued to be studied by the Arabs.

The Renaissance (from about AD 1300 to 1650) in Europe was the beginning of major biological advancement. The serious study of anatomy emerged in the 1500s through the efforts of Leonardo da Vinci and Andreas Vesalius, who documented the relationships between the anatomies of humans and of other animals. Advances in anatomy and physiology (the study of the internal processes of organisms) continued to be made by means of dissection of organisms during the 16th and 17th centuries.

In the 1600s an explosion in biological interest and ideas occurred as a result of the invention and development of the microscope. The value of this important new research tool in scientific experiment and discovery was phenomenal. Unsuspected processes and organisms that were new to science were discovered in a flurry of biological investigation that gave fresh insight into the understanding of life on Earth. During the 17th century Anthony van Leeuwenhoek reported his observations of single-celled animals (protozoa) invisible to the naked eye. He subsequently observed spermatozoa, leading to new questions and interpretations of the role of the male in fertilization and reproduction. In 1665 Robert Hooke reported on the presence in organisms of tiny compartments that he named “cells.” Marcello Malpighi successfully used the microscope for medical purposes. He observed and carefully described many microscopic structures, including red blood cells. Many other contributions to biology were made during this period as a result of the discoveries in this previously unseen microscopic realm of the living world.

In the 1750s a major advance in biology was the publication of Carolus Linnaeus’ classification scheme for organisms. He was one of the first taxonomists (one who classifies and names organisms) to organize living things in a simple and logical manner that appealed to most scientists. In his system the name of the plant or animal consists of two words, the first being the genus and the second being the species. The system was designed to indicate the degree of affinity and difference among species. Linnaeus’ scheme, which was greatly influenced by the ideas of John Ray, another taxonomist, persists today as the basis for naming plants and animals.

New biological concepts and theories developed rapidly during the 18th and 19th centuries and challenged many old ideas. In 1859 Charles Darwin published his theory of evolution in a book entitled ‘On the Origin of Species by Means of Natural Selection’. The concept of natural selection and evolution revolutionized 19th-century thinking about the relationships between groups of plants and animals. His thoughtful presentation provided a sound biological explanation for the existence of multitudes of different organisms in the world and suggested that they might be related to one another. To support his ideas Darwin used examples from geology, domestic animals, cultivated plants, and from his personal observations of the wealth of biological variability and similarity that can be found among living creatures. Although genetics and the mechanisms of inheritance were unknown during Darwin’s time, he noted that certain life forms are more likely to survive than others. This concept of natural selection provided, for the first time, a universal explanation for the variations observed in nature. He made a powerful case that new species can be formed—and others become extinct—by a gradual process of change and adaptation made possible by this natural variability. Darwin’s ideas influenced the field of biology more than any other concept.

The all-important hereditary mechanism providing for natural selection was discovered by Gregor Mendel six years after Darwin’s controversial book. Mendel’s work, however, was not recognized until 1900. Mendel published evidence in 1865 that garden peas inherited characteristics from their parents in a mathematically predictable fashion. He thus introduced the concept of the gene as the unit of inheritance. With the rediscovery of Mendel’s work and the discovery of chromosomes in the early 1900s the rapidly developing field of genetics and heredity strengthened understanding of evolution.

Science in the 20th century has provided an overwhelming number of new findings and intriguing theories about biological processes. The annual output of biological material today is so massive that no single individual can possibly acquire all of the information. Biology has, therefore, become a discipline of specialists who restrict their research to small areas.

The fields of biology are so diverse that disagreement exists about the most important discoveries of recent years. With the advent of electron microscopy and refined optics, subcellular biologists consider problems at the molecular level. At the other end of the spectrum concern for the effects that environmental processes have on organisms has resulted in major research efforts in ecology and in the development of ecosystem concepts. These and other areas of biology have developed within the last 50 years as a consequence of major findings by specialists.

SUBDIVISIONS OF BIOLOGY:-

Biology can be divided into fields of study in a variety of ways, depending upon the questions being asked. Because of the breadth of knowledge in modern biology fields of specialization have developed in which an individual scientist can concentrate on his specialty and keep abreast of pertinent developments. Although most modern biologists are specialists in particular fields, many rely on other scientific disciplines such as physics, chemistry, and geology in attempting to understand certain biological phenomena. For example, detailed studies of bioluminescence—the light produced by organisms such as fireflies—require a knowledge of complex biochemical processes. Studies of the evolution of specific groups of plants or animals that are frequently found as fossils require a background in geology.

Some scientific investigators restrict their research to one or a few groups of organisms. For this reason the specialty of many biologists becomes the group of organisms that they study. Such designations can be general in nature, such as zoology (the study of animals), botany (the study of plants), or bacteriology (the studyof bacteria). Or they can be more specific, as the following:

Algology: algae:-
Arachnology: spiders, mites, scorpions

Bryology: mosses

Entomology: insects

Herpetology: reptiles and amphibians

Ichthyology: fishes

Malacology: mollusks

Mammalogy: mammals

Mycology: fungi

Nematology: nematode worms

Ornithology: birds

Parasitology: parasites

Protozoology: protozoans (single-celled animals)

Specialty names can be derived from any particular taxonomic group. For example, a scientist who studies the primates, which includes the apes and monkeys, would be called a primatologist.

Some biologists study selected structural or functional features, regardless of taxonomy. In such studies general principles are sought that transcend taxonomic groups. Therefore, the biological investigator is not necessarily restricted to a particular group of organisms. For example, cellular respiration occurs in any living cell, plant or animal, and so a cellular physiologist might conduct research on organisms from many different taxonomic groups.

Taxonomy:-


Naming organisms and establishing their relationships to one another have been a fundamental development of biology since people first became aware of the wealth of plant and animal types in the world. The importance of this endeavor continues today and is carried out by scientists who work with museums and many universities. Taxonomic rules can be developed for, and principles of classification can be applied to, all groups of plants or animals. Because of the large number of species, however, most classification specialists limit their efforts to particular groups of organisms.

Using the standard rules established by Linnaeus, today’s taxonomists classify species based on shared attributes and the closeness of their evolutionary relationships. Each species is given a generic name (genus), which is capitalized, and a specific name (species), which is not. Besides genus and species, severalhigher taxonomic levels are internationally recognized. The higher levels indicate the phylogenetic relationships, the degree to which different species have diverged from each other during the course of evolution. Thus, closely related groups are placed in the same taxonomic category at all levels, whereas distantly related forms are placed together only at the higher taxonomic levels.

Modern classification has resulted in the discovery of taxonomic techniques that permit new interpretations of phylogenetic relationships among organisms. The biological classification scheme serves the vital function of stating what the phylogenetic relationships are believed to be, based on current knowledge. The taxonomic placement of particular species, genera, or groups of higher levels will be continually challenged as scientific progress is made.

Embryology and developmental biology:-


Developmental biologists seek to describe and understand the processes that govern the growth and development of organisms. Included within the field are studies of embryological development of plants or animals and the natural phenomenon of regeneration in which removed cells, tissues, or entire structures of an organism grow back. Research of this nature has direct applicability to the medical profession through the development of principles that give insights into human developmental processes.

Anatomy and morphology:-


Anatomists and morphologists study the structure of organisms. Some morphological research compares homologous (similar in origin) or analogous (similar in function) structures among different species to establish phylogenetic relationships. Other studies may be carried out to determine the function or mode of operation of an anatomical feature. Histology (study of tissue structure) and cytology (study of cell structure) are specialized areas of morphology. Many morphological studies are useful in human or veterinary medicine.

Physiology:-


A physiologist studies the functions of the organs and tissues of plants and animals. A cell physiologist investigates processes at the subcellular level. At the other extreme physiological research focuses on how systems (such as circulatory, digestive, and reproductive) function. Many physiological studies are intimately associated with morphology.

Genetics and molecular biology:-


Molecular biologists have made great strides during the 20th century because of the development of techniques that permit the study of previously unseen structures and processes. Geneticists, who study the phenomena associated with inheritance, have benefited from the molecular-level findings as they apply to genes, chromosomes, and other structures. Molecular biology and genetics are two of the most dynamic and fast-developing fields of biology today. Recent developments in human genetics are raising many new and presently unresolved moral and philosophical issues, such as those concerned with test-tube births and genetic engineering.

Ecology:-


Ecologists study the relationships and interactions between plants, animals, and environments by examining the structure and function of environmental systems (ecosystems). Many ecological studies require input from other disciplines of science or other fields of biology. Determining how organisms respond to environmental changes is of practical value today in dealing with pollution and land use. An understanding of ecological processes is necessary in order to make intelligent decisionsabout modifying natural environments.

Behavior and sociobiology:-


Animal behaviorists attempt to understand why animals behave the way they do. The approaches range from observations of animals in completely natural habitats to experiments using laboratory animals. Sociobiology is concerned with the social interactions within a given species and focuses on such issues as whether certain traits are inherited or are culturally induced. Animal behavior and sociobiology are tied closely to the fields of psychology and sociology.

Evolutionary biology:-


Evolutionary biology seeks to answer questions about the origin and the genetic relationships of plants and animals, including the origin of humans. Evolutionary biologists examine relationships between organisms by means of comparative studies within any of the previously named fields of biology or through paleontology (thestudy of fossils). Comparative studies reveal differences and similarities between species or higher taxonomic units. Evolutionary biology has received considerable public attention in the last century because of the application of basic evolutionary principles to humans.

Other subdivisions:-

Although the above-named categories represent the major subdivisions of the discipline of biology, other fields can be added. Many scientific disciplines require a knowledge of biology. For example, biochemistry emphasizes chemical processes, especially the subcellular ones, in plants and animals. Biochemistry is a subdivision of organic chemistry but requires, in addition, detailed knowledge of cellular biology and physiology. Paleontology requires extensive training in geologic processes and taxonomy. Other fields, such as biophysics, radiation biology, and limnology (the study of lakes), to name only a few, can have a strong biological emphasis depending upon the particular type of research being conducted.

Basic Biology and Applied Biology:-

A controversy revolves around basic, or pure, biology and how it relates to applied, or practical, biology. The former is represented by studies for which no immediate practical value is apparent. The latter is represented by studies that are conducted for the clearly defined purpose of solving a particular problem. Examples of applied biology include research with immediate applicability to medicine, agriculture, or environmental issues.

On the other hand, there is no way of knowing which basic studies will turn up discoveries that will someday relate directly to a practical issue, even though the potentialvalue of the discoveries is unsuspected at the time that they are made. Among the classic examples of such a situation are the studies of Alexander Fleming, who did basic research on molds and fungi and happened to discover that one particular strain of bread mold inhibited the growth of certain bacteria. Fleming had discovered a strain of Penicillium mold, and later this knowledge led to the development of the important antibiotic drug penicillin. Basic biological studies are essential to the welfare of science and should never be prejudged as impractical.

River

Introduction:-

The Earth’s rivers carry the water that people, plants, and animals must have to live. They also provide transportation and waterpower. Nations have learned to harness the power of rivers by building hydroelectric dams such as those constructed on the Volga River. Rivers are also a principal natural force in shaping land surfaces. Theydrain surplus water to the sea, deposit soil and rocks to build new acreage, and erode land formations. Rivers have created such natural wonders as the Nile Delta in Egypt and the Grand Canyon in the United States.

Rivers and Human Activity:-

In many ways rivers helped give rise to human civilization. The earliest people built their towns and villages beside the rivers’ flowing waters. Here they found a water supply, a food supply, a means of transportation, and protection from enemies. These settlements often developed into major urban centers of trade and commerce. Most of the great cities of the Middle East, India and Asia, Europe, and North and South America arose beside the largest rivers on the continents.

The settlement of new lands throughout the world followed the course of rivers. Settlers usually traveled to the interior lands by raft or boat or followed trails through river valleys. Fertile valleys made good farmland that was watered and enriched by flowing rivers and streams. Town sites were located where rivers could provide a means of transport for goods and power for mills.

Today people are also dependent upon rivers for much of their water supply. Spreading cities need huge amounts of water every day for industrial and home use. Hydroelectric dams generate millions of volts of electricity that serve the energy needs of modern urban and rural areas. In dry and semiarid lands, water from rivers is used to irrigate acreage for farming.

People have not always been content to let rivers choose their own courses and rates of flow. To get the greatest benefit from these natural resources, people alter rivers through engineering projects. They widen, deepen, and straighten streams to control the speed and flow of the streams’ water. Engineers construct reservoirs,levees, and floodwalls to control flooding. Such projects keep high waters from overflowing and limit the amount of damage done to surrounding towns and farmland. Engineers also build canals with locks and dams so boats navigating rivers can get past falls and rapids. In some cases they dig canals to link rivers with other bodies of water. The St. Lawrence Seaway, which serves as part of the border between the United States and Canada, is one of the best examples of such engineering projects. The seaway is a complex of natural waterways, deepened channels, locks, and canals stretching across 2,342 miles (3,769 kilometers). It links the five Great Lakes in Canada and the United States with the Atlantic Ocean, providing 9,500 miles (15,288 kilometers) of navigable waterways. (See also Dam; Canal; Waterway.)

Human activities can also be harmful to rivers. Industries such as paper manufacturing and nuclear power require vast quantities of water in their pro- cesses. Waste products and heated water discharged from such plants pollute rivers and streams and can damage or destroy plant and animal life that de- pends on the waterways. Many streams are polluted by sewage or by commercial fertilizers and pesticides that drain into the water from the surrounding land. The destruction of grass and forest in the watersheds has added to the flood problem in some states, muddied the streams, and filled the lakes with silt. In some areas levees or dams built to control flooding have actually made the condition worse. If a river’s flow is slowed too much, the river bed begins to fill with silt, making it shallower and less able to carry the same volume of water. As a result, during times of heavy rainfall the river is unable to handle the added water and overruns its banks more quickly than it did before the levees and dams were built.


How Rivers Flow:-

A river starts as a tiny trickle, or rill, on a slope. Rainfall, snowfall, a spring, or the melting of glacial ice may be its source. As it flows downhill it is joined by other trickles to make a brook. Other brooks add their waters to form a stream, which broadens into a creek. As the water continues its downward journey, it gains in volume and finally becomes a river.

Along its course, the river receives water from inflowing streams called branches, or tributaries. The river and its branches make up a river system. The area that the system drains is its basin. A divide, or watershed, separates the drainage areas of neighboring streams.

Rivers are also fed by groundwater—water that has soaked into the earth instead of running off the surface. This water flows steadily into the river—sometimes through underground springs.

Nearly all rivers have an upper, middle, and lower course. Each level has its own characteristics. The upper course begins at higher elevations. Here the river is smaller and usually has a rapid, tumbling flow that cuts a narrow channel through rocky hills or mountains. It may roll large boulders along in its swift current. The river creates waterfalls where it carves out layers of soft rock and leaves a cliff of hard or resistant rock standing. It forms rapids along sloping rocky beds. When a hard rock formation follows a definite line in a region, all the rivers that cross it there have falls. This is called the fall line. When a river reaches a level or a sunken area, it may form a lake (see Lake). Over thousands or millions of years the river erodes, or wears away, soil and rocks and carves a canyon or a deep, V-shaped valley. The type of formation it creates depends on the force of the river and the type of material it erodes.

When the river descends to lower elevations, it runs more slowly over the gently sloping land of its middle course. Its current no longer has the force to carry stones or gravel. This material drops to the riverbed, where it forms bars of sand or gravel or builds islands. These formations are continually changing shape as the river deposits or erodes material. The formations affect the river in turn by altering its course. River currents swing toward one bank or the other, gradually undercutting the banks and widening a V-shaped valley into a U shape. In the United States, for example, V-shaped valleys are more common in the geologically younger Western states while U-shaped valleys are found in the older regions of the Central and Eastern states.

As the river flows downstream it reaches the still gentler slope of its lower course. It drops more of its load than it did upstream and begins to build up its bed (aggradation) instead of tearing it down (degradation). The valley has been eroded into a wide plain. The river swings in great S-shaped curves, forming loops called meanders.

When a river floods, it may cut across the narrow part of the loop, making a new, shorter channel. The loop is left as a lake known as an oxbow lake. Braided channels appear when the river level falls and exposes bars of sand or gravel. A single meandering channel can become braided downstream from a tight bend in the river, where coarse material is brought up from the river bottom to form sandbars or islands of gravel. The braided river channels typically occur on the edge of land ice or on plains such as the Canterbury Plains of South Island in New Zealand.

At times heavy rain or melting snow rushes from the upper or middle course of a river into the shallow channel of the lower course. The river floods the surrounding country, leaving a thin layer of sediment. Such an event may happen seasonally, as in the annual flooding of the Nile, or only on rare occasions, as in the case of unusually heavy rainfall or snow melt in an area. If the flooding is seasonal, in time the layers of sediment accumulate and build a broad, fertile floodplain, like that along the Mississippi and the Nile. Most of the silt and sand drops nearest the channel, forming a broad embankment, or levee. In time the river may flow on a bed higher than the level of the plain. The fertile soil of floodplains attracts human settlement, but flooding can destroy crops and property along the river. To protect the plain, engineers may deepen the channel by dredging accumulated sediment from the riverbed, or they may build artificial levees, or dikes, to contain the river as it rises.

When the river reaches the sea, it deposits its remaining load of silt, gravel, and sand at its mouth. This material builds an ever-growing triangular-shaped area called a delta. Here the river branches into several distributaries that empty into the ocean. The mixture of fresh and salt water often gives rise to unique plants and animals. If some distributaries become choked with silt or plant life, the river creates new distributaries and enlarges the delta. Wherever a seacoast has sunk at the mouth of a river, the ocean flows into the river valley, forming an estuary. The mouth of the St. Lawrence River is an estuary.

Ocean

Introduction:-

It has been called the new frontier. The great body of water embracing the continents of the Earth is also known as the world ocean. Its major subdivisions are the Pacific, the Atlantic, the Indian, and the Arctic oceans. Some people divide the world ocean into the North Pacific, South Pacific, North Atlantic, South Atlantic, Indian, Arctic, and Antarctic—a total of seven. The term seven seas, however, originated with medieval Arabic geographers who knew only the waters of Europe and Asia.

Around the borders of the oceans lie partially enclosed seas and gulfs, such as the Mediterranean, Caribbean, Baltic, Black, Red, and North seas, the Gulf of Mexico, and the Persian Gulf. The landlocked Caspian Sea was part of a great ocean in an earlier geologic era. Gulfs are generally described as extensions of oceans or seas.The Gulf of Mexico is larger than most seas. Straits are narrow passageways connecting two large bodies of water, such as the Strait of Gibraltar between the Atlantic Ocean and the Mediterranean Sea.

Oceans, seas, gulfs, and straits cover about 71 percent of the Earth’s surface. No other known planet is as watery as the Earth. The Atlantic, Pacific, Indian, and Arctic oceans cover 129,428,700 square miles. The Pacific Ocean is the largest. It occupies almost one third of the Earth’s total area. The oceans are not evenly distributed over the Earth’s surface. About 43 percent of their total area lies in the Northern Hemisphere and 57 percent in the Southern Hemisphere.

The word ocean is derived from Oceanus—in Greek mythology one of the Titans. He was a son of Uranus (the sky) and Gaea (the Earth), the first rulers of the world. Oceanus personified the river that the Greeks believed encircled the flat Earth.

The oceans influenced the formation of the land surface of the Earth as it is known today. During several periods of the Earth’s history large parts of NorthAmerica were covered by the ocean. Most of the limestone, sandstone, and shale on land was deposited as sediment on the bottom of ancient, shallow seas. Chalk, such as that found in England, Texas, and Kansas, was formed on seabeds from the shells of sea creatures.

The oceans also affect climate. Water has a high capacity for storing heat. It warms more slowly than land, and it also cools more slowly. Thus the coasts of the continents have cooler summers and warmer winters than the inland areas. The influence of the Gulf Stream is one example. The oceans are also the birthplace of storms that affect climate throughout the world.

Oceans as a Source of Food:-

Terrestrial life is meager compared to the vast richness of life in the ocean. Although life itself probably originated in the ocean and new forms are continually being discovered, especially at great depths along the midocean ridges, many life forms in the ocean remain unknown. With their abundance of plant and animal life, the oceans offer much potential as a source of food for humans. Fish, for example, is a source of protein that may feed people in areas plagued with soil erosion or drought. Plankton, the microscopic plant and animal life that constitutes the basic food of many fish, may someday be harvested commercially as a significant food source. Thor Heyerdahl, the Norwegian scientist and writer who traveled from Peru to Polynesia on the balsa raft Kon-Tiki, reported that he found plankton “good eating.” Analysis has proved that plankton is rich in protein, fat, and carbohydrate. The strange color reflections of some waters—red, yellow, green, or brown—indicate the presence of various types of plankton.

Minerals, Energy, and Water Resources:-

Many kinds of minerals are extracted from seawater, ocean shores, and the bed of the deep sea (see Oceanography). Compared to the extensive mineral exploration on land, that of the sea has been minimal. As resources on land are depleted or become unavailable, the sea is looked to as a great storehouse of minerals (see Minerals).

There are five major mineral-resource regions of oceans: the beaches, seawater, the continental shelves, seafloor sediments, and rock beneath seafloor sediments. Many beach deposits, concentrated by the action of ocean surf, contain the same minerals found on land. Dredging operations are used to extract many of these deposits—gold, tin ore, iron ore, and diamonds. Among the heavy minerals mined from beaches are ilmenite, rutile, zircon, and magnetite. Parts of the continental shelves are exploited as sources of oil and gas, most notably the Gulf of Mexico, North Sea, Persian Gulf, North Slope of Alaska, and Lake Maracaibo in Venezuela. The continental shelves also host mineral deposits such as calcareous shell, phosphate rock, and sand and gravel. The ocean floors are littered with strange dark-colored potato-sized lumps or nodules. These are sources of manganese, iron, nickel, cobalt, and other elements.

Energy is distributed throughout the world’s oceans in several usable forms. Solar energy is an inexhaustible resource absorbed by oceans. The heat transmitted during absorption is responsible for ocean waves, differences in water and air temperature, and currents. Various attempts to tap wave energy and current energy in devices such as wave machines and water “windmills” have met with some success. Field tests near Hawaii of a new device, called the Ocean Thermal Energy Conversion (OTEC) unit, indicate that it may be practical to produce electrical energy from steep ocean thermal gradients. OTEC, also called sea thermal power or sea solar power, is limited to warm equatorial regions where there is a difference of at least 16 to 25° F between surface and deep subsurface waters. Some tidal energy is used in the Rance project in Brittany. Here power is tapped as waters rush upstream at high tide and downstream at low tide. There are more than 100 locations throughout the world where tidal amplitudes are suitable for the establishment of tidal power plants.

Almost all naturally occurring elements can be found in seawater. Extraction of common salt (NaCl) by evaporation is widely practiced in many regions, some with solar salt-evaporation ponds. Elements commercially extracted from seawater include bromine, magnesium, and gold. Distilling drinking water from the salty oceans is expensive because of high costs associated with the heat and power required for seawater conversion. Nuclear power stations near coasts are often equipped to use an unlimited supply of sea water to cool reactors.


The Underocean “Seascape”:-

Many methods exist for exploring and charting the ocean depths. Where land and sea meet is the tidal zone. Seaward is the continental shelf, where the land drops downward underwater to depths as great as 500 to 600 feet. The continental shelf is widest where it has been formed from the deposits of mud and silt carried from the interior of the continents by rivers or from the gradual sinking of the land itself. It is shallow where the land has eroded from the ceaseless battering of waves against the shore. The shelf may project for 100 to 800 miles, or there may be no shelf where mountain ranges rise along the coastline.

Extending from the outer edge of the continental shelf is the steep continental slope. These slopes are the farthest boundaries of the continents. They plunge two miles or more to the deep-sea floor. The final zone is the ocean basin, or floor. The flat area of a seabed is called an abyssal plain.

Deep fracture zones and trenches carve the ocean bottom. There are also submarine mountain ranges; long ridges; guyots (flat-topped seamounts); canyons; and volcanic peaks, the highest points of which may rise above the water as oceanic islands. Hawaii’s highest volcanic peak—Mauna Kea—is 13,796 feet above sea level. From its base on the ocean floor, it is 32,024 feet high. No mountain wholly on land rises so high above its base.

The mean depth of the oceans is 12,000 feet. The regions in which the bottom lies below 18,000 feet are known as deeps. Off the island of Guam in the western Pacific is the Mariana Trench. Its lowest explored point is the Challenger Deep, almost 6.8 miles (35,800 feet) below the surface of the sea. This is the deepest verified spot in the world. The highest mountain on Earth—Mount Everest (29,028 feet)—could sink into the Challenger Deep, and its peak would lie more than a mile below the surface of the water. Ten other trenches in the Pacific Ocean each exceed 4 1/2 miles in depth.

The deepest known spot in the Atlantic Ocean is in the Puerto Rico Trench (27,498 feet) which lies about 90 miles northwest of the coast of Puerto Rico. This trench is a giant chasm 450 miles long, lying in an east-west direction.

The Mid-Oceanic Ridge:-

By far the greatest submarine mountain ridge in the world is the Mid-Oceanic Ridge. It is a continuous 40,000-mile belt that encircles the world and bisects the oceans. In the Atlantic Ocean it is called the Mid- Atlantic Ridge. It curves from the Arctic Ocean southward, down the center of the Atlantic, and around the bottom of Africa. Here it divides, one branch running up the Red Sea and the other going around Australia into the Pacific and north back to the Arctic. A branch off South America is called the East Pacific Rise.

The Mid-Oceanic Ridge is up to 1,000 miles wide. It rises one to two miles above the floor of the basins on either side of it. A giant crack, half a mile to a mile and a half deep and from 20 to 80 miles wide, runs down the center. It is a focal point of volcanic activity. From it rise such volcanic islands as Tristan da Cunha, Ascension, the Azores, and Iceland on the Mid-Atlantic Ridge, and the Galápagos Islands and Easter Island on the East Pacific Rise. New islands may appear abovethe surface as a result of volcanic activity in the ridge— for example the island of Surtsey that erupted near Iceland in 1963.

Life in the Ocean:-

Sunlight will support plant life for little more than 600 feet below the surface of the sea. It was long believed that where there is no light there can be no plant life and where there is no plant life there can be no animal life. So the great ocean floor, it was theorized, must be a desolate region of emptiness and death. Then a telegraph cable in the Mediterranean broke at a depth of more than 7,000 feet. When the broken ends were raised, the cable was found to be overgrown with an astonishing variety of creatures. They had been living in the dark and icy cold of the sea bottom, with tons of water bearing down upon them. The scientists who descended to the bottom of the Puerto Rico Trench in 1964 reported a great abundance of life even at the depth of 27,498 feet.

Living creatures are most abundant in the sunlit surface waters and at the depth to which sunlight penetrates. Here is the realm of plankton. The name comes from the Greek planktos (“drifting,” or “wandering”). Planktonic plants and animals are too small and weak to do anything but drift with the currents. The sunlit waters are also thehabitat of fish that feed on plankton and on each other.

On the shallow bottoms of the continental shelves live myriads of creatures that crawl, swim, or remain fixed to sand or rock—shellfish, worms, jellyfish, horseshoe crabs, corals, sponges, and many other species. In the deep seas live strange fish with special adaptations to the darkness and the enormous pressures of their environment.

These fish feed on other fish and on the plankton and other nutrient materials that drift down to them from the upper waters. Some shine with the soft, dull light of phosphorescence, illuminating the ocean bed as they move about. They survive under the great pressure of the deep sea because the pressure inside their bodies equals the pressure on the outside.

The Curious Danger of Falling Up:-

Although the inhabitants of the ocean abysses are able to live under an enormous load of water, they are liable to extraordinary accidents. If, in searching for food, certain bottom-dwelling fishes rise above their equilibrium level, they become lighter and float upward. If their swimming bladders expand uncontrollably, these deep-sea fish tumble upward to the surface.

Oceanic Exploration:-

Until recent years a journey to the bottom of the sea was an impossible dream. Since pressure in the ocean increases with depth, free-swimming divers without breathing apparatus can reach depths of only about 100 feet. In 1943 the development of a self-contained underwater breathing apparatus (SCUBA), by Frenchmen Jacques-Yves Cousteau and Émile Gagnan, began a new era of shallow-water exploration. Many problems associated with deep-water pressure changes and cold-water diving have been alleviated with new diving techniques, devices, and suits.

To overcome the limitations of prolonged oceanographic exploration, relatively stable platforms that reduce motion due to sea waves are often used. Some have an observation and decompression chamber that divers can enter and exit at depths of 75 feet.

Small submersible bathyscaphes such as the Trieste and Archimede, are capable of diving to the deepest parts of the ocean. Designed by the Swiss Auguste Piccard, the bathyscaphe contains a diving compartment, a gasoline-filled hull, and ballast.

To descend, it releases gasoline; to rise, it drops ballast. In 1960 Piccard and Lieutenant Donald Walsh of the United States descended in Trieste to the record depth of 35,800 feet in the Challenger Deep of the Mariana Trench. With the Johnson–Sea-Link submersible, divers at a depth of 1,500 feet can leave and reenter a submerged chamber pressurized to ambient water pressure.

The Alvin and Deep Quest are mid-range submersibles designed to operate at depths approaching 13,000 feet. The Alvin was used in the 1986 expedition in which a French-American team of oceanographers photographed the remains of the Titanic on the floor of the North Atlantic. Robert Ballard, from Woods Hole Oceanographic Institution, and colleagues from the French Institute for Research and Exploitation of the Sea (IFREMER) used the Alvin and ROVs (remotely operated vehicles) to study the wreck site. With the undersea robot system called ANGUS (acoustically navigated geophysical underwater survey), the Ballard expedition was able to take some 53,000 pictures of the ship.

Living and Working Underwater:-

Habitats and laboratories stationed on the seafloor enable the inhabitants to remain for long periods underwater. In 1963 Cousteau and a seven-man team lived for a month in Continental Shelf Station (Conshelf) 2 at the bottom of the Red Sea. In 1965 six French scientists lived in Conshelf 3 for three weeks at a depth of 330 feetin the Mediterranean Sea. In Sealab I in 1964, aquanauts lived for ten days at a depth of 192 feet off the Bermuda coast. In Sealab II a total of 45 days was spent in the Pacific Ocean at a depth of 205 feet near La Jolla, Calif., in 1965. Another undersea-living experiment was conducted in 1969 when “home” to four aquanauts was the TEKTITE–1 for a period of 30 days, nearly 60 feet below the surface of Virgin Island waters.

The commercial success of penetrating the ocean floor for oil and natural gas led to many developments that extended the range of oil-field operations to the seabed. The Downhaul Utility Capsule, for example, is lowered into the sea where it joins and forms a seal with a chamber previously placed over a wellhead. Wateris then pumped from the chamber, and wellhead valves are installed at surface atmospheric pressure. Plans for industrial undersea work sites are often stalled because of the high costs of building and maintaining the structures.

Oceanographic endeavors of the future are expected to include the at-sea assembly of huge structures such as drill rigs and platforms, improved underwater welding techniques, and submersible construction equipment. Underwater bulldozers are currently used in excavation and in the construction of underwater structures. During the late 1980s and early 1990s a tunnel connecting England with continental Europe was under construction.

Exploring the Ocean Depths with Instruments:-

Until the 1920s soundings of the ocean depths were made by dropping a weighted line overboard. The development of oceanographic exploration from space in the late 1950s outdated many simple mechanical devices. Modern oceanographic instrumentation is usually considered in terms of measuring systems, not of individual components or isolated techniques.

Depth measurement, for example, is often determined to 3-percent accuracy with pressure devices such as Bourdon tubes or Well tubes. Acoustic methods are used to measure the distance between measuring gear and the seafloor. Seismic shooting records sound waves returned from the ocean bed from explosive charges and measures the thickness of ocean-floor sediments. Navigational echo sounders provide an image of seafloor topography by sending sound waves vertically to the sea bottom and recording the time it takes for the echo to return. Satellite imaging can now depict shallow forms and the general outline of large features in the deepest parts of the ocean. Deep-water samples are commonly collected from Nansen bottles. Water samples from the upper 1,000 feet are taken from a moving vessel with a Spilhaus sampler. Current meters automatically record direction and velocity and are used as moored, free-floating, or free-falling devices.

Measurement of water-level variations employs the oldest recording instruments used in oceanography—tide staffs and floating gauges. Pneumatic gauges and high-sea gauges are used to measure water-level variations in the open sea. Wave data are obtained from low-level aircraft, satellites, and buoys. Networks of “waverider” buoys are often used to measure the sea state; data are sent by radio or satellite to receivers on land or on a ship. Temperature of the sea surface is also measured from airplanes or satellites by observing the intensity of the infrared radiation of a specific wavelength. Fluid thermometers measure water temperature in deep layers; salinometers measure salinity, temperature, and pressure; corers and grabs bring up sediments and other materials from the ocean bottom; various types of tow nets gather small plants and animals from seawater; and trawls catch deep-sea fish.

Oceanographic Research and Institutions:-

Oceanographic research is very expensive. Usually it is undertaken by governmental and international organizations or by large universities. The first purely scientific oceanographic expedition ranks as one of the greatest ever undertaken. From 1872 to 1876 the British research vessel HMS Challenger cruised around the world. The famous 50-volume report of the Challenger Expedition formed the basis of the modern science of oceanography. Much research was carried on during World War II. Since then there has been more exploration of the ocean than in all previous history. In the 1970s, as part of the International Decade of Ocean Exploration, the United States undertook projects dealing with environmental quality, environmental forecasting, and seabed assessment.

Many large organizations study the oceans. The Joint Oceanographic Assembly, for example, is sponsored by all major nongovernmental, scientific organizations. The Intergovernmental Oceanographic Committee of the United Nations Educational, Scientific, and Cultural Organization (UNESCO) sponsors numerous long-termexpeditions and research projects such as Future Ocean Research (FORE).

Surface-research vessels are maintained by such organizations as the University of California’s Scripps Institution of Oceanography at La Jolla, Calif.; the University of Rhode Island’s Graduate School of Oceanography (Narragansett Marine Laboratory) at Kingston, R.I.; the Woods Hole Oceanographic Institution at Woods Hole, Mass.; the consolidated University of North Carolina and the marine laboratory of Duke University at Beaufort, N.C.; Oregon State University laboratory at Newport, Ore.; the Laboratory of the Marine Biological Association of the United Kingdom at Plymouth, England; the National Institute of Oceanography at Surrey, England; the Zoological Station at Naples, Italy; and the Oceanographic Museum in Monaco.

Mountains

Introduction:-

A mountain is a landform that rises prominently above its surroundings. It is generally distinguished by steep slopes, a relatively confined summit, and considerable height. The term mountain has topographic and geologic meanings. It generally refers to rises over 2,000 feet (610 meters).

Compared to a hill, a mountain is defined by its greater height and volume. A plateau is distinguished by its flat surface and a mountain by its greatly irregular surface. Most mountains are peaked, but many have flat tops. Mount Everest, which borders China and India, is the highest peak in the world, towering 29,023 feet (8,846 meters) above sea level.

Altimetry is the measurement of altitude, or elevation above sea level. Mountain altitudes can be measured by an aneroid barometer designed to register changes in atmospheric pressure accompanying changes in altitude, by radar altimetry, or by the traditional triangulation survey of points of known altitudes. Modern satellites make it possible to determine the elevation of any remote peak on Earth.

Subsea mountains, usually volcanic cones, are commonly associated with midoceanic ridges or hot spots in the Earth. The massive volcano Mauna Loa, on the island of Hawaii, is one of the largest mountains in the world. It rises 6 miles (10 kilometers) above the sea floor—2.6 miles (4.2 kilometers) of which are above sea level—and has a basal diameter of about 60 miles (97 kilometers).

Mountains have played a major role in human history, forming geopolitical boundaries between countries and natural barriers to migration and transportation. They also have formed refuge areas for distinctive mountain cultures and economies such as those that have flourished in the Himalayan nations of Tibet and Nepal. Potential waterpower and mineral deposits are commonly found in mountains but are frequently expensive to develop.

Mountains such as those along coastal regions of Washington, Oregon, and California in the United States are often associated with special weather conditions. Here moist air masses move inland from the Pacific and are cooled by forced ascent over these mountains, producing heavy rainfalls on the windward slopes. This is called the orographic effect. The eastward mountain slopes are in a rain shadow where rainfall is much less. The foehn and chinook are warm, dry winds that move down mountain slopes, often melting snow and causing avalanches or parching a landscape.

Types of Mountains:-

Of the several kinds of mountains that exist, most may be defined in terms of geologic structure. Although most mountain chains share certain common features, mountains can be broadly grouped into five specific types.

Dome mountains:-


are formed where a region of flat-lying sedimentary rocks is warped or bowed upward making a structural dome. Their topography is characterized by a relatively flat, dissected surface sloping gradually toward the surrounding lowlands, or basins. The diameters of the bases of dome mountains range up to hundreds of kilometers. These mountains may also result from the erosion of a structural dome. Typical examples of domed mountains include the Black Hills of South Dakota and the Weald in southeast England.

Fold mountains:-


are distinguished by large-scale folding, caused by lateral compression and simultaneous or subsequent uplift of stratified rocks. Simple fold mountains form where sediments have been folded by sliding over a basement of igneous or metamorphic rocks. The process is somewhat analagous to pushing a carpet lying on a floor up against a wall to form large rumples. Such mountains exhibit sequences of straight, parallel valleys and ridges. The valleys are carved out of the softer rocks, and the more resistant rocks remain as ridges. Examples of fold mountains include the Appalachian Highlands of North America and the Swiss Jura bordering France and Switzerland.

Fault-block mountains:-


are formed by fracturing in the Earth’s surface, a process referred to as taphrogeny. If there are two parallel faults, the crustal block between them may either rise to produce a horst-block mountain or fall to produce a rift valley. Such a fallen block is called a graben. The term block mountain may be applied to tilted fault-block and complex faulted uplands. Block mountains exist in Nevada, Utah, and Arizona, where they form basin-and-range landscapes. Uplifted blocks may have younger covering formations stripped off them, leaving relict landforms as in the Harz and Black Forest terrains of Germany and in the Massif Central of France.

Volcanic mountains:-


are created by overlapping lava flows and layers of consolidated volcanic dust, called tuff. Such stratified volcanoes occur in the Pacific Northwest of North America and in Japan. They are typically steep-sided cones that are built up around a central vent. This conical shape may be modified by lateral eruptions, as in the case of Mount St. Helens in Washington, or by the collapse of the central vent, caused by the withdrawal of magma. This creates a pit called a caldera. Volcanic mountains with calderas are Mount Mazama in Oregon and Krakatoa in Indonesia.

Plateau mountains:-


occur in series when the folds of a mountain chain pass abruptly into the horizontal strata of a basalt plateau that is largely denuded of trees and eroded. These topographic forms are, however, really pseudomountains that are produced by the erosion of a plateau—for example, the Catskill Mountains of New York. These examples occur in association with major plateaus of the world, such as the Colorado and Tibet plateaus and the Altiplanos of South America.

Theories of Mountain Formation:-

Every continent contains two main kinds of building units: shields and mountains. The shield, or craton, is the nucleus of Precambrian rock around which the continent has accumulated. Mountains of intensely folded and faulted strata and volcanic rock surround the cratons. Mountains are formed by various mountain-building processes. In the mid-1800s mountain formation, or orogeny, was thought to include both the deformation of rocks within the mountains and the creation of the mountainous topography. Today, most geologists regard the formation of mountainous topography as postorogenic. Orogeny is the process by which structures within fold-belt mountainous areas were formed, including thrusting, folding, and faulting in the outer layers of the Earth.

Knowledge of the origin of mountains comes from analysis of geologically young mountain ranges of high elevation, such as the Himalayas and the Alpine ranges ofAsia and southeastern Europe. Older and more deeply eroded ranges such as the Appalachians of eastern North America and the Caledonian Belt of northwestern Europe have also provided insight into mountain-building processes. Geologists believe that the younger mountain belts on Earth are related to global tectonics . During the last century they developed the geosynclinal theory to account for mountains composed of sediments. According to this concept, extraordinarily thick sediments accumulated in large basins, or geosynclines, are subjected to the compressional forces that produce folds, faults, metamorphism, and eventually a mountain chain. The compressional mountain-building event that occurs in geosynclinal areas is also called an orogeny.

In the framework of plate tectonics, orogeny occurs primarily at the boundaries of colliding plates. At these sites sedimentary deposits on the surface are crumpled, forming folded mountains. Volcanism is initiated, and volcanic belts may form. An example of this type of mountain building occurs along the Pacific coast of South America in the Andes Mountains where the American and Nazca plates collide. The collision of continents may instead produce a mountain range of thickened continental crust. A prime example of the result of a continent-continent collision is the Himalayas, which began forming 25 million years ago when a plate carrying India slid into the Asian plate.

According to the theory of continental drift proposed by the German meteorologist Alfred Wegener, mountains form by crumpling along the leading edge of a drifting continent as it moves through the seafloor. This concept is usually considered a corollary to modern plate-tectonics theory. The forces involved in mountain building are caused by the tectonic deformation of the Earth’s crust.

Mountain Climate:-

Because of their great elevation, mountains affect climate and vegetation in different ways. At similar latitudes, elevation above sea level plays a major role in climaticconditions. Snowfields and glaciers found at high elevations where temperatures rarely rise above freezing are often associated with microclimates. Highland climates have large changes in temperature from night to day. Mountain areas typically have heavier rainfall than the surrounding lowlands. The windward sides of mountains tend to be more cloudy and rainy and have smaller temperature ranges. Leeward sides of mountains are drier, sunnier, and more variable in temperature.

The timberline or tree line is the elevation at which tree growth stops. Its location depends on temperature, soil, drainage, and other factors. The mountain timberlinealways would be higher near the Equator than near the poles if it were not for the abundant rainfall in equatorial mountains, which lowers the air temperatures. Someof the mountains in the Western United States have two timberlines: a lower, dry timberline and a cold timberline about 2,000 to 4,000 feet (600 to 1,200 meters) above the dry timberline. Forests near the tree line on windward slopes are often stunted and twisted by strong winds into strange shapes known as elfinwood. In the Northern Hemisphere, tree lines are somewhat lower, and vegetation may be denser on the south slopes.

Effects on Human Life:-

Mountainous terrain is often both an asset and a hindrance to humans. Mountains have provided protection from war-minded neighbors. The Swiss have thrived in theirmountain environment because it has given them a degree of political independence that is unusual in their part of the world. The high mountains that border Switzerland on the west and north made it possible for the country to avoid military involvement in both world wars. The Swiss have, however, developed a high standard of living only with prodigious effort, determination, and ingenuity. Mountains have furnished valuable resources of minerals, timber, water, and scenery. Some mountain slopes, like those of volcanoes in Java, Guatemala, and Sicily, have unusually fertile soils for agriculture. The short growing seasons at high altitudes, however, often restrict agriculture to specialized crops such as tea and coffee in lower altitudes and to grazing in higher ones. Mountain dwellers also have to contend with avalanches, landslides, earthquakes, and glacial bursts.

The rigors of mountain living associated with cold temperatures and low oxygen levels and difficulties with construction and maintenance of engineering works have precluded the development of many modern highland cities. One of the highest cities in the United States, Santa Fe, N.M., lying at 6,996 feet (2,132 meters) above sea level, compares with the elevation of Mexico City but not with the much older cities in the Andes and Tibet. Potosí, Bolivia, is the world’s highest city at 13,045 feet (3,976 meters). At elevations of 17,500 feet (5,334 meters), atmospheric pressure is reduced to about one half that at sea level.

Solar energy

Introduction:-

All life on Earth depends on energy from the sun. Solar energy is the source of energy for photosynthesis. It provides the warmth necessary for plants and animals to survive. The heat from the sun causes water on the Earth’s surface to evaporate and form clouds that eventually provide fresh rainwater.

Solar energy is the result of thermonuclear fusion reactions deep within the sun. These reactions produce so much energy that they keep the surface temperature of the sun at about 10,300° F (5,700° C). Even though solar energy is the largest source of energy received by the Earth, its intensity at the Earth’s surface is actually very low due to the large distance between the Earth and the sun and the fact that the Earth’s atmosphere absorbs and scatters some of the radiation. Even on a clear day with the sun directly overhead, the energy that reaches the Earth’s surface is reduced about 30 percent by the atmosphere. When the sun is near the horizon and the sky is overcast, the solar energy at ground level can be negligible. It also varies from one point to another on the Earth’s surface.

Nevertheless, in the 20th century, the sun’s energy has become an increasingly attractive source for small amounts of direct power to meet human needs. A number of devices for collecting solar energy and converting it into electricity have been developed, and solar energy is used in a variety of ways. Solar energy is used to heat houses, and in many countries specially designed solar ovens are used for cooking. The sun also supplies energy to electric generators that provide power for weatherand communications satellites and for radio and television equipment.

Collection and Conversion:-

Because the intensity of the sun’s radiation at the surface of the Earth is so low, collectors designed to capture solar energy must be large. In the sunniest parts of the continental United States, for example, in order for a collector to gather enough energy to serve one person for one day, the area of the collector’s surface must be about430 square feet (40 square meters). The actual energy that can be used depends on the efficiency of the collector and of the device that converts the radiation into usable energy.

Flat-plate collectors:-

The most common flat-plate collectors consist of a dark metal plate, covered with one or two sheets of glass, that absorbs heat. The heat is transferred to air or water, called carrier fluids, that flows past the back of the plate. This heat may be used directly or it may be transferred to another medium. Flat-plate collectors are used for home and hot-water heating. Flat-plate collectors typically heat carrier fluids to temperatures ranging from 150° to 200° F (66° to 93° C). The efficiency of such collectors varies from 20 to 80 percent.

Concentrating collectors:-

When higher temperatures are required, a concentrating collector is used. These collectors reflect and concentrate sunlight from a wide area. One such device, called a solar furnace, was installed in the Pyrenees in France and has several acres of mirrors focused on a single target. The energy concentrated at the target is 3,000 times that received by any single mirror, and the unit produces temperatures of up to 3,630° F (2,000° C). Another structure, the so-called “power tower” plant near Barstow, Calif., generates 10,000 kilowatts of electricity. Here, the furnace acts as a boiler and generates steam for a steam turbine-electric generator power plant.

In sophisticated concentrating collectors such as the California tower, each mirror is rotated by a heliostat that directs the sun’s rays from the mirror to the target. Positioning motors, drives, and controllers make such systems expensive. Less costly collectors can produce temperatures lower than those of more advanced concentrating collectors but higher than those of flat-plate collectors. For example, parabolic reflectors that concentrate sunlight on black pipes can produce fluid temperatures of about 400° to 550° F (200° to 290° C) and can concentrate the solar energy up to 50 times its original strength.

Photoelectric cells:-

In the concentrating collectors described above, electricity is generated from solar energy by a steam power plant in which the boiler gets its energy by absorbing concentrated solar radiation rather than by burning a fossil fuel. There is, however, a means of converting solar energy directly into electricity—by using photoelectric cells, or solar cells. These cells produce an electrical voltage as long as light shines on them. Although photoelectric cells are very reliable, their efficiency is low—less than 11 percent. Consequently, they must be combined into large arrays to generate sufficient power for practical applications. Large photoelectric panels have been used to power orbiting satellites, but on the ground the use of photoelectric cells is limited primarily to providing electricity for watches, calculators, and cameras.

Storage

Solar-energy collection is variable and does not necessarily match the changing demand for energy. Consequently, some form of energy storage is necessary to save energy for use during times when there is little or no sunlight. The electrical power from photoelectric cells can be stored in electric storage batteries. In systems that use the collected energy to heat a fluid, the fluid may be directly stored in an insulated tank or the energy may be transferred to another storage medium, such as a bed of rocks.

Potential:-

The potential for solar energy is enormous. Each day the Earth receives in the form of solar energy about 200,000 times the total world electrical-generating capacity. Although the energy itself is free, the high cost of collection, conversion, and storage has limited the exploitation of solar energy. Nevertheless, researchers are experimenting with solar power in a variety of contexts.

One scheme that has been proposed for the future is the use of satellite solar-power stations to supply power to Earth. In this scheme, a satellite equipped with large solar panels would collect solar energy constantly, bypassing atmospheric interference. The electricity would be converted to microwaves and then beamed to Earth, where the microwave energy would be converted back to electricity for distribution.

Tsunami

Large and destructive water wave, usually caused by seismic event. One of the most powerful and feared natural disasters, a tsunami can challenge a jet airplane forspeed and a three-story building for height, packing enough energy to destroy an entire coastal community in moments. Although seismic events such as earthquakes or volcanic eruptions are the most common cause of tsunamis, the impact of cosmic bodies, such as meteorites, can generate the formidable waves as well.


The word tsunami is a Japanese word, represented by two characters: tsu, meaning “harbor,” and nami, meaning “wave.” Although tsunamis are often referred to as tidal waves, this is a misnomer. Tides are generated by the gravitational effects of the moon, sun, and planets. Tsunamis are caused by a sudden or impulsive disturbance that vertically displaces the water column. They are not connected to tides, though the tide level affects the impact a tsunami has as it reaches the shore.

Tsunamis are most commonly generated by earthquakes in marine and coastal regions. Some marine earthquakes are caused when the seafloor abruptly deforms; the resulting energy transfer to the water column produces large waves. Another type of offshore earthquake is associated with the movement of oceanic and continental plates. This is particularly prevalent in the Pacific, where the dense oceanic plates tend to slip under the lighter continental plates that rim the ocean. The vertical movement produces a tsunami because of the large amount of energy transferred as the water column is displaced. Other underwater seismic events, such as volcanic eruptions and landslides, can also generate tsunamis.

Unlike submarine events, which disrupt the water column from below, supermarine events and cosmic impacts disturb the water from above; as the object hits the water surface, energy from the momentum of the falling debris is transferred to the water. This creates tsunamis that often are not as long-lived as those caused by submarine events; however, they still pack enough force to cause severe damage.

Tsunamis are much larger than the wind-generated waves we observe at the beach, and they also have a longer period. (The period is the time between the end of one wave and the beginning of another.) While a wind-generated wave might have a length of approximately 500 feet (150 meters) and a period of ten seconds, a tsunami may be 60 miles (100 kilometers) long and have a period of one hour. Tsunamis behave like shallow-water waves because the ratio between the depth of the water and the length of the wave is very small. This property of tsunamis relates directly to the tremendous speed they can achieve, because a shallow-water wave travels at speeds related to the depth of the water and the acceleration of gravity. The deeper the water, the faster the wave. Assuming an ocean depth of 13,100 feet (4,000 meters), a tsunami can travel more than 400 miles (640 kilometers) per hour. At this speed, a tsunami can compete with a jet airplane.

The vast length of a tsunami also affects the force it carries. As the wave travels, the rate of energy loss is inversely proportional to the length of the wave. This meansthat the longer the wave, the less energy is lost as it travels, and therefore the more energy it still has as it strikes the coastline.

As the tsunami approaches land, it grows larger. Because the speed of the wave is proportional to the water depth, as the water becomes more shallow, the speed of the wave diminishes. As the speed decreases, the height increases. The energy stored in the wave dissipates slightly, due to bottom friction and turbulence closer to shore, but the wave still packs a good deal of force.

Tsunamis consist of a series of waves. Because the waves have very long periods, the danger posed by a tsunami can last several hours, especially since the first wave may not be the largest of the series. The force of a tsunami as it reaches shore is enormous, and it will continue to travel until its energy is completely dissipated. This means that it may travel inland several hundred feet, carrying with it boats, large rocks, and other heavy debris. All low-lying coastal areas are vulnerable to tsunami attack.

Tsunami waves are very small in deep water. Because they are virtually imperceptible on the open sea, no effective warning system has yet been developed. However, the Pacific Tsunami Warning Center in Hawaii does issue bulletins when there is a possibility of a tsunami in the Pacific. A watch bulletin is always released when a terrestrial or submarine earthquake occurs that registers a magnitude of 6.75 or greater on the Richter scale. A warning bulletin is released when tidal stations note certain characteristics of the sea matching those of a potential tsunami.

It is not possible to outrun a tsunami, but there are precautions that can be taken to minimize the possible dangers of a tsunami. The generation of a tsunami is rapid, and be