Mongol invasions of Korea

1231–1271 Mongol Yuan conquests

A series of campaigns were conducted between 1231 and 1270 by the Mongol Empire against the Korean kingdom of Goryeo. The last campaign concluded with a peace treaty with Goryeo becoming a vassal state of the Yuan dynasty, a relationship that lasted for approximately 80 years. Korea and the Song Dynasty of China put up a greater amount of "stubborn resistance" towards the Mongol invasions than many others in Eurasia who were swiftly crushed by the Mongols at a lightning pace.

From Wikipedia, under CC BY-SA. More on occurri.