Goryeo was invaded via the Mongols in seven major campaigns from your 1230s right up until the 1270s, but was under no circumstances conquered.[117] Fatigued immediately after many years of battling, Goryeo despatched its crown prince to the Yuan capital to swear allegiance to the Mongols; Kublai Khan accepted, and https://felix1ef8s.webbuzzfeed.com/34444143/not-known-facts-about-korea