THE BEST SIDE OF KOREA

Goryeo was invaded from the Mongols in seven big strategies within the 1230s till the 1270s, but was in no way conquered.[117] Exhausted soon after many years of battling, Goryeo despatched its crown prince to the Yuan capital to swear allegiance towards the Mongols; Kublai Khan acknowledged, and married among his daughters on the Korean crown prin