RUMORED BUZZ ON KOREA

Goryeo was invaded because of the Mongols in 7 major campaigns in the 1230s right up until the 1270s, but was under no circumstances conquered.[117] Fatigued after decades of fighting, Goryeo sent its crown prince for the Yuan money to swear allegiance on the Mongols; Kublai Khan approved, and married amongst his daughters to the Korean crown princ