Goryeo was invaded because of the Mongols in 7 important campaigns from the 1230s till the 1270s, but was in no way conquered.[117] Exhausted soon after a long time of preventing, Goryeo despatched its crown prince on the Yuan funds to swear allegiance to your Mongols; Kublai Khan recognized, and https://seth1dc6o.blogdigy.com/helping-the-others-realize-the-advantages-of-korea-50758991