Goryeo was invaded by the Mongols in seven significant campaigns through the 1230s until eventually the 1270s, but was hardly ever conquered.[117] Fatigued after decades of fighting, Goryeo sent its crown prince towards the Yuan capital to swear allegiance towards the Mongols; Kublai Khan acknowledged, and married among his daughters https://lorenzo2fa5g.shoutmyblog.com/33115156/helping-the-others-realize-the-advantages-of-korea