HELPING THE OTHERS REALIZE THE ADVANTAGES OF KOREA

Goryeo was invaded with the Mongols in 7 important campaigns in the 1230s until finally the 1270s, but was under no circumstances conquered.[117] Fatigued after decades of combating, Goryeo sent its crown prince for the Yuan cash to swear allegiance into the Mongols; Kublai Khan accepted, and married certainly one of his daughters towards the Korea