Thailand (tī'lănd, –lənd) , Thai Prathet Thai [land of the free], officially Kingdom of Thailand, constitutional monarchy (2005 est. pop. 65,444,000), 198,455 sq mi (514,000 sq km), Southeast Asia. Occupying a central position on the Southeast Asia peninsula, Thailand is bordered by Myanmar on the west and northwest, by Laos on the north and east (the Mekong River forms much of the line), by Cambodia on the southeast, and by the Gulf of Thailand and Malaysia on the south. Bangkok is the capital and by far the largest city. Administratively, the country is divided into 76 provinces.

Land and People

A southward extension into the Malay Peninsula gives Thailand a long coastline on the Gulf of Thailand and on the Andaman Sea. The heart of the country, the fertile and thickly populated central plain, is dotted with numerous rice paddies, entirely flat and rarely more than a few feet above sea level. It is watered by the Chao Phraya and lesser rivers and is elaborately veined by a system of canals (called klongs) for irrigation and drainage. Bangkok and Ayutthaya, the old capital, are in that basin. The north is mountainous, with peaks rising to c.8,500 ft (2,590 m); mountains stretch south along the boundary with Myanmar on the west. Forests in the north yield teak, although overcutting has decreased Thailand's forest reserves severely.
Although the population in the north is relatively sparse, rice is intensively cultivated in the river valleys, and one of the country's major cities, Chiang Mai, is in that area. Most of NE and E Thailand is occupied by the Korat (Khorat) plateau, which is cut off from the rest of the country by highlands and the Phetchabun Mts. It is a hilly, dry, and generally poor region, where livestock raising is dominant. Chief towns are Nakhon Ratchasima (Korat), Udon Thani, and Ubon Ratchathani. Peninsular Thailand in the south (which includes Phuket and other offshore islands) is largely mountainous and covered with jungles. It is the principal source of the rubber and tin that make Thailand a major world producer of both. Chief towns of the peninsula are Hat Yai and Songkhla, the second largest port of the country. Thailand has a tropical and monsoonal climate.
Thailand has a large Chinese minority, accounting for almost 15% of the population. Local trade is chiefly in the hands of the Chinese and as a consequence there is substantial tension between Thais and Chinese. Other substantial minorities include the Muslim Malays, concentrated in the southern peninsula; the hill tribes of the north; the Khmers, or Cambodians, who are found in the southeast and on the Cambodian border; and the Vietnamese, chiefly recent refugees who live along the Mekong River. While the ethnic minorities generally speak their own languages, Thai (linguistically related to Chinese) is the official tongue; English predominates among the Western languages. Theravada Buddhism is the state religion; some 93% of the people are Buddhists.

Economy

The economy is heavily agricultural, with rice by far the leading crop; Thailand is the world's leading exporter of rice (1990). Other commercial crops include rubber, corn, kenaf, jute, tapioca, cotton, tobacco, kapok, and sugarcane. Thailand's teak, once a major export, is still a valuable commodity. Marine and freshwater fisheries are important; fish provide most of the protein in the diet, and some of the deep-sea catches (mackerel, shark, shrimp, crab) are exported. Thailand is also a major exporter of farmed shrimp. Tin, by far the most valuable mineral, is a major export item. Tungsten, lead, zinc, and antimony are also mined for export. Iron ore, gold, precious and semiprecious stones (especially saphires and rubies), salt, lignite, petroleum, asphaltic sand, and glass sand are exploited on a smaller scale.
Thailand has substantial hydroelectric potential, which is being developed; projects have been constructed on the Ping, Mekong, Phong, and Songkhram rivers. Industry is growing and is centered chiefly in the processing of agricultural products; rice milling is by far the most important, followed by sugar refining, textile spinning and weaving, and the processing of rubber, tobacco, and forest products. During the 1980s and 1990s, electronics became important, causing a substantial rise in the per capita GDP. Lumbering is concentrated in the north. The country also has a small steel mill, an oil refinery, tin smelters, and vehicle and machine assembly plants. Small factories, many of which are in the Bangkok area, manufacture building materials, jewelry, glass, pharmaceuticals, and various consumer goods. Tourism is the leading source of foreign exchange, and handicraft production has a ready market in the tourist trade. Thailand is also a major transshipment point for illicit heroin and has become a drug money–laundering center.
Bangkok is a key point on round-the-world air routes. It is the political, commercial, cultural, and transportation center of the country, with the only port that can accommodate oceangoing vessels. Thailand's railroads originate in Bangkok and extend to Chiang Mai, the Korat plateau, and to Cambodia, Laos, and Malaysia; a corresponding network of paved highways has been constructed. Thailand's inland waterways—a complex, interconnected system of rivers, streams, and canals—have been important arteries since ancient times; barges and boats still carry well over half the cargo moved in the central plain.

Government

Thailand is governed under the constitution of 1997, its 17th since 1932. The king is the head of state. The prime minister, who is chosen by the house of representatives, is the head of government. The bicameral national assembly consists of the 200-member senate, whose members are elected from constituencies on a nonpartisan basis for six-year terms, and the 500-seat house of representatives, whose members are popularly elected for four-year terms; 400 of the representives are elected from constituencies, and the rest on a proportional basis.

History

Early History
Like other countries of Southeast Asia, Thailand in prehistoric times was peopled through successive migrations from central Asia into territory already inhabited by the Negrito peoples. Although a few Thai groups (ethnically related to the Shan of Myanmar and the Lao of Laos) migrated to the northern hill country of Thailand, the main body of Thais remained in Yunnan, China, where by A.D. 650 they had organized the independent kingdom of Nanchao. By 1000, however, the Chinese had overrun Nanchao and made it a tributary state. With the destruction of the kingdom of Nanchao by the Mongols under Kublai Khan in 1253, the slow infiltration of Thailand from the north turned into a mass migration. By that time the Khmer Empire was well established in the Chao Phraya valley and on the Korat plateau.
The Thais captured the Khmer town of Sukhothai, in N central Thailand, and a new Thai nation, with its capital at Sukhothai, soon developed. During this period (c.1260–1350), King Rama Kamheng, whose 40-year reign began c.1275, borrowed from the Khmers of Cambodia the alphabet that the Thais still use. He extended Sukhothai power southward to the sea and down the Malay Peninsula, and contact was made with India. After the death of Rama Kamheng, Sukhothai declined and was absorbed by Rama Tibodi, prince of Utong, who established (c.1350) a new capital at Ayutthaya. The kings of Ayutthaya consolidated their power in S Siam and the Malay Peninsula, then launched a long series of indecisive wars against the Lao state of Chiang Mai and against Cambodia, which did not end until the 19th cent. The 16th cent. saw the beginnings of warfare with the Burmese; in 1568 the Burmese captured Ayutthaya and dominated the country until c.1583, when King Naresuan (1555–1605) drove them from Siam. He captured Tanintharyi and Tavoy in S Myanmar and the major port of Mergui.