Goryeo was invaded from the Mongols in seven key strategies with the 1230s until the 1270s, but was by no means conquered.[117] Exhausted right after a long time of preventing, Goryeo despatched its crown prince to your Yuan cash to swear allegiance to the Mongols; Kublai Khan accepted, and married certainly one of his daughters for the Korean crown prince,[117] along with the dynastic line of Goryeo ongoing to outlive beneath the overlordship on the Mongol Yuan dynasty being a semi-autonomous vassal condition and Obligatory ally.

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