NOT KNOWN FACTUAL STATEMENTS ABOUT KOREA

Goryeo was invaded by the Mongols in seven main strategies with the 1230s right until the 1270s, but was never conquered.[117] Exhausted right after a long time of preventing, Goryeo despatched its crown prince to your Yuan cash to swear allegiance into the Mongols; Kublai Khan accepted, and married one of his daughters towards the Korean crown pri