5 SIMPLE TECHNIQUES FOR KOREA

Goryeo was invaded because of the Mongols in 7 major campaigns in the 1230s until finally the 1270s, but was under no circumstances conquered.[117] Fatigued just after many years of fighting, Goryeo sent its crown prince towards the Yuan capital to swear allegiance towards the Mongols; Kublai Khan acknowledged, and married one among his daughters o