Goryeo was invaded because of the Mongols in 7 major campaigns in the 1230s until finally the 1270s, but was never ever conquered.[117] Fatigued immediately after many years of battling, Goryeo despatched its crown prince into the Yuan capital to swear allegiance to the Mongols; Kublai Khan accepted, and married https://simon7us3f.blogtov.com/14436810/not-known-facts-about-korea