Goryeo was invaded by the Mongols in seven significant campaigns through the 1230s until eventually the 1270s, but was hardly ever conquered.[117] Fatigued after decades of fighting, Goryeo sent its crown prince for the Yuan money to swear allegiance for the Mongols; Kublai Khan approved, and married one among his https://messiah6pl9s.get-blogging.com/34467365/a-review-of-korea