Goryeo was invaded from the Mongols in seven main 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 on the Mongols; Kublai Khan approved, and married one among his daughters https://gregory2ea5i.blogolize.com/an-unbiased-view-of-korea-72991547