After Taksin's death, General Chakri became the first king of the Chakri Dynasty, Rama I, ruling from 1782 to 1809. His first action as king was to transfer the royal capital
across the river from Thon Buri to Bangkok and build the Grand Palace. Rama II (1809-1824) continued the restoration begun by his predecessor. King Nang Klao, Rama III (1824-1851) reopened relations with
Western nations and developed trade with China. King Mongkut, Rama IV, (1851-1868) of "The King and I" concluded treaties with European countries, avoided colonialisation and established modern
Thailand. He made many social and economic reforms during his reign . King Chulalongkorn, Rama V (1869-1910) continued his father's tradition of reform, abolishing slavery and improving the public welfare
and administrative system. Compulsory education and other educational reforms were introduced by King Vajiravudh, Rama VI (1910-1925). During the reign of King Prajadhipok, (1925-1935), Thailand changed from
an absolute monarchy to a constitutional monarchy. The king abdicated in 1933 and was succeeded by his nephew, King Ananda Mahidol (1935-1946). The country's name was changed from Siam to Thailand with the
advent of a democratic government in 1939. Our present monarch, King Bhumibol Adulyadej, is King Rama IX of the Chakri Dynasty.