Goryeo was invaded by the Mongols in seven main campaigns through the 1230s until eventually the 1270s, but was hardly ever conquered.[117] Fatigued just after decades of fighting, Goryeo sent its crown prince to the Yuan capital to swear allegiance towards the Mongols; Kublai Khan acknowledged, and married among his https://lane2ih9t.blogvivi.com/34552530/detailed-notes-on-korea