Sukhothai Kingdom

The Sukhothai Kingdom was the first independent Tai polity in the central plain of present-day Thailand and is traditionally regarded as the cradle of the Thai nation.

It emerged around 1238 CE when two local Tai chiefs, Pho Khun Bang Klang Hao and Pho Khun Pha Muang, rebelled against the declining Khmer Empire and seized the city of Sukhothai; Bang Klang Hao was enthroned as the first king under the regnal name Si Inthrathit, founding the Phra Ruang dynasty. The kingdom reached its zenith under Ram Khamhaeng the Great (r. c. 1279-1298), who expanded its influence southward onto the Malay Peninsula, west toward Myanmar, and northeast into modern Laos. Ram Khamhaeng is credited in Thai historiography with promoting Theravada Buddhism, fostering trade and ceramic (Sangkhalok) production, and inventing the Sukhothai script, the ancestor of the modern Thai alphabet, recorded in the famous 1292 Ram Khamhaeng Inscription. The era is remembered for a relatively paternalistic style of kingship and a flowering of art and architecture, including graceful walking-Buddha images. After Ram Khamhaeng's death the kingdom declined and fell under the orbit of the rising Ayutthaya Kingdom, becoming a tributary and finally being absorbed in 1438 following the death of Maha Thammaracha IV (Borommapan). Sukhothai's cultural and political legacy remained foundational to subsequent Thai states.