This empire collapsed in 1286 after forces sent by Kublai Khan sacked its namesake capital, leading to Mongol suzerainty over the Irrawaddy basin.
While living in this polity, the 12th century linguist Aggavamsa published his famous grammar of the Pali language. One successor state to this polity was founded by the Three Shan Brothers, and King Kyawswa briefly managed to revive this polity as a puppet state. This polity was founded in response to raids by the Nanzhao kingdom, which forced Pyinbya, this polity's first ruler, to build a fortified capital. At the height of its power, this empire controlled the north side of the Strait of Malacca and competed with its eastern neighbor, the Khmer Empire. This empire collapsed in 1286 after forces sent by Kublai Khan sacked its namesake capital, leading to Mongol suzerainty over the Irrawaddy basin. For ten points, name this first major empire of Burma.
While living in this polity, the 12th century linguist Aggavamsa published his famous grammar of the Pali language.
Kingdom of {Bagan} [accept: {Pagan}]