NOT KNOWN FACTS ABOUT KOREA

Goryeo was invaded through the Mongols in 7 big strategies from the 1230s until finally the 1270s, but was never ever conquered.[117] Fatigued immediately after many years of battling, Goryeo despatched its crown prince towards the Yuan money to swear allegiance on the Mongols; Kublai Khan approved, and married considered one of his daughters to yo