NOT KNOWN FACTS ABOUT KOREA

Goryeo was invaded with the Mongols in 7 important strategies in the 1230s until finally the 1270s, but was never ever conquered.[117] Fatigued just after many years of fighting, Goryeo sent its crown prince towards the Yuan money to swear allegiance on the Mongols; Kublai Khan approved, and married considered one of his daughters into the Korean c