NOT KNOWN FACTUAL STATEMENTS ABOUT KOREA

Goryeo was invaded with the Mongols in 7 key strategies from the 1230s until finally the 1270s, but was under no circumstances conquered.[117] Fatigued after decades of combating, Goryeo sent its crown prince on the Yuan funds to swear allegiance to your Mongols; Kublai Khan recognized, and married one of his daughters to the Korean crown prince,[1