HOW KOREA CAN SAVE YOU TIME, STRESS, AND MONEY.

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 just after many years of fighting, Goryeo sent its crown prince to the Yuan capital to swear allegiance towards the Mongols; Kublai Khan acknowledged, and married among his daughters on the Ko