Goryeo was invaded through the Mongols in 7 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 one among his daughters https://manuel0yu2a.blogmazing.com/33096062/the-smart-trick-of-korea-that-no-one-is-discussing