NOT KNOWN DETAILS ABOUT KOREA

Goryeo was invaded with the Mongols in 7 important strategies from the 1230s till the 1270s, but was never ever conquered.[117] Fatigued immediately 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 one among his daughters to your Korea