Goryeo was invaded because of the Mongols in 7 important strategies from the 1230s till the 1270s, but was in no way conquered.[117] Exhausted right after a long time of preventing, Goryeo despatched its crown prince on the Yuan funds to swear allegiance to your Mongols; Kublai Khan approved, and https://archer1fc5i.bloggerchest.com/33850026/5-simple-techniques-for-korea