In the 7th century AD rhe rising Khmer Empire began to extend its power over the northeastern region. By the 11th century it had reached the Chao Phraya River valley. The great period of Khmer monument building commenced with the reign of Suriyavarman I (AD 1002-50). The principal religion in the early centuries was Hinduism. [...]
What is traditionally called the Dvaravati Period extends from the 7th to 11th centuries AD; a more accurate name might be Mon, for during this period, several Mon kingdoms rose in central Thailand, first at U Thong near the subsequent Thai capital of Ayutthaya, and later at Lopburi and Nakhon Pathom. All three were centers [...]
Khmer-speaking people are also numerous in some parts of the northeast, particularly in Surin province near the Cambodian border. Most of them migrated during the 19th century when Siam occupied a large part of Cambodia. The recent war in Cambodia has driven millions I of Khmer refugees into Thailand but many of them are being [...]