Ahom kingdom
The Ahom kingdom (; 1228–1826), or Kingdom of Assam, was a late medieval kingdom in the Brahmaputra Valley that existed for 598 years from 1228 until 1826 and came to incorporate large parts of modern Assam. Established by Sukaphaa, a Tai prince from Möng Mao (present-day Dehong, China), it began as a small Tai polity in the upper Brahmaputra valley based on wet-rice agriculture.