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Southeast AsiaAsia

Rattanakosin Kingdom (Siam)

Also known as Siam, Chakri dynasty

1782 – 1932 CE · about 150 years

The Rattanakosin Kingdom was Siam under the Chakri dynasty, founded by King Rama I, who made Bangkok the capital. Kings Mongkut and Chulalongkorn modernised the state, and Siam was the only Southeast Asian country never colonised by a European power. The 1932 revolution ended absolute monarchy.

Key facts

Dates1782 – 1932 CE
RegionSoutheast Asia
ContinentAsia
CapitalBangkok
FounderRama I (Phutthayotfa Chulalok)
Religion(s)Theravada Buddhism

Before & after

Preceded by

Ayutthaya Kingdom Lan Na Kedah Sultanate Patani Kingdom Thonburi Kingdom Kingdom of Vientiane

Sources

Dates follow widely used reference works; many ancient dates are approximate or debated. Neutral summary for general reference.