Goryeo was invaded through the Mongols in seven key strategies with the 1230s right until the 1270s, but was never conquered.[117] Exhausted following decades of combating, Goryeo sent its crown prince for the Yuan money to swear allegiance for the Mongols; Kublai Khan acknowledged, and married among his daughters on https://travis0ba5l.blogdigy.com/the-single-best-strategy-to-use-for-korea-50759743