THE SMART TRICK OF KOREA THAT NO ONE IS DISCUSSING

Goryeo was invaded with the Mongols in 7 important campaigns in the 1230s until finally the 1270s, but was never ever conquered.[117] Fatigued just after many years of fighting, Goryeo sent its crown prince for the Yuan capital to swear allegiance into the Mongols; Kublai Khan acknowledged, and married amongst his daughters for the Korean crown pri