How long did the Rattanakosin Kingdom last?
Rattanakosin Kingdom (1782–1932)
The Rattanakosin Kingdom (Thai: อาณาจักรรัตนโกสินทร์, IPA:[āːnāːt͡ɕàk ráttanákōːsǐn]) is the fourth and present traditional centre of power in the history of Thailand (or Siam). It was founded in 1782 with the establishment of Bangkok as the capital city. The period ended with the Siamese revolution of 1932.
1932 in Siam
The year 1932 was the 151st year of the Rattanakosin Kingdom of Siam (now known as Thailand). It was the eighth year in the reign of King Prajadhipok (Rama VII), and is reckoned as year 2474 (1 January – 31 March) and 2475 (1 April – 31 December) in the Buddhist Era. The year is most notable in the history of Thailand as the year in which the abolition of absolute monarchy by the Khana Ratsadon took place, on 24 June.