THE SMART TRICK OF KOREA THAT NO ONE IS DISCUSSING

Goryeo was invaded with the Mongols in 7 big strategies from the 1230s till the 1270s, but was in no way conquered.[117] Fatigued soon after many years of battling, Goryeo despatched its crown prince into the Yuan cash to swear allegiance to the Mongols; Kublai Khan accepted, and married certainly one of his daughters for the Korean crown prince,[1