The earliest evidence of settled habitation is that of the
Dvaravati culture. At one time it was thought that the early town was founded on the coast of the
Gulf of Thailand, and that over time the coast had moved 30 km (18 miles) away to the south, due to
sedimentation coming down the
Mae Klong River. However, geological and
palynological investigation has shown that these early Dvaravati and proto-Dvaravati towns were all inland, at the edges of swamps when founded. Ratchaburi remains an important commercial centre, however. Archeological discoveries show that the area was already settled in the
Bronze Age, and the town itself is known to have existed for at least two thousand years. In the 13th-century, King
Ram Khamhaeng seized Ratchaburi and incorporated it into the
Sukhothai Kingdom. Later it was an important trade centre in the
Ayutthaya Kingdom. In 1768 the
Burmese (who had recently destroyed Ayutthaya) were thrown out of Ratchaburi by
King Taksin, and the town became part of
Siam. In 2000, a splinter group of
Karen activists from Burma, known as
God's Army, briefly took the Ratchaburi hospital staff and patients hostage, before the siege was ended by the Thai army. == Climate ==