NOT KNOWN FACTUAL STATEMENTS ABOUT KOREA

Goryeo was invaded via the Mongols in 7 major campaigns from your 1230s right up until the 1270s, but was hardly ever conquered.[117] Fatigued after decades of fighting, Goryeo sent its crown prince for the Yuan money to swear allegiance on the Mongols; Kublai Khan approved, and married considered one of his daughters to your Korean crown prince,[1