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 on the Mongols; Kublai Khan approved, and married considered one of his https://louis8xw4i.jts-blog.com/32924246/the-smart-trick-of-korea-that-no-one-is-discussing