Goryeo was invaded through the Mongols in 7 key strategies with the 1230s right until the 1270s, but was never conquered.[117] Exhausted right after a long time of combating, Goryeo sent its crown prince for the Yuan money to swear allegiance on the Mongols; Kublai Khan approved, and married one https://angelo3nl0x.blogsvirals.com/33070414/korea-options