HELPING THE OTHERS REALIZE THE ADVANTAGES OF KOREA

Goryeo was invaded from 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 on the Yuan money to swear allegiance for the Mongols; Kublai Khan acknowledged, and married among his daughters on the Korean crown prince,[1