[PAR] [TLE] Goryeo [SEP] Goryeo (고려 ; 高麗 ; ] ; 918–1392), also spelled as Koryŏ, was a Korean kingdom established in 918 by King Taejo.  This kingdom later gave name to the modern exonym "Korea".  It united the Later Three Kingdoms in 936 and ruled most of the Korean Peninsula until it was removed by the founder of the Joseon in 1392.  Goryeo expanded Korea's borders to present-day Wonsan in the northeast (936–943), the Yalu River (993) and finally almost the whole of the Korean Peninsula (1374). [PAR] [TLE] Siege of Kuju [SEP] The Siege of Kuju which occurred in 1231 was a decisive Goryeo victory against the Mongol Empire.  After the Mongol army crossed the Yalu river, it quickly captured almost all of Goryeo's border defenses.  The Mongol army, however, ran into stiff resistance both at Anju and the city of Kuju (modern-day Kusong), commanded by General Park Seo.
[PAR] [TLE] Goryeo [ SEP ] Goryeo ( 고려 ; 高麗 ; ] ; 918–1392 ) , also spelled as Koryŏ , was a Korean kingdom established in 918 by King Taejo . This kingdom later gave name to the modern exonym " Korea " . It united the Later Three Kingdoms in 936 and ruled most of the Korean Peninsula until it was removed by the founder of the Joseon in 1392 . Goryeo expanded Korea 's borders to present - day Wonsan in the northeast ( 936–943 ) , the Yalu River ( 993 ) and finally almost the whole of the Korean Peninsula ( 1374 ) . [PAR] [TLE] Siege of Kuju [ SEP ] The Siege of Kuju which occurred in 1231 was a decisive Goryeo victory against the Mongol Empire . After the Mongol army crossed the Yalu river , it quickly captured almost all of Goryeo 's border defenses . The Mongol army , however , ran into stiff resistance both at Anju and the city of Kuju ( modern - day Kusong ) , commanded by General Park Seo .
What empire did the a Korean kingdom defeat in 1231?
What empire did the a Korean kingdom defeat in 1231 ?
Mongol Empire
Mongol Empire