Goryeo was invaded because of the Mongols in 7 major campaigns in the 1230s until finally the 1270s, but was by no means conquered.[117] Exhausted soon after many years of preventing, Goryeo despatched its crown prince into the 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 for a semi-autonomous vassal condition and Obligatory ally.
The southern and western elements of the peninsula have effectively-designed plains, when the jap and northern parts are mountainous. The highest mountain in Korea is Mount Paektu (2,744 m), through which runs the border with China. The southern extension of Mount Paektu is really a highland referred to as Gaema Heights. This highland was largely elevated in the course of the Cenozoic orogeny and partly protected by volcanic subject. Into the south of Gaema Gowon, successive superior mountains can be found together the jap Coastline 파라곤 with the peninsula.