"1231 invasion of Korea" . "invasions" . "Goryeo dynasty" . . . . . "several invasions against Korea" . "invaded in 1232" . "Mongol invasion of Goryeo" . "Mongol invasions of Korea" . . "1254 invasions of Korea" . . "invasions by the Mongol Empire" . . "1235 invasion of Korea" . "invasions of Korea" . "Mongolian invasions" . . "Korea" . . . "Mongol conquest of Korea" . "1251 invasion of Korea" . "Mongol Invasion" . . "invasions against Korea" . . . "6 Mongol invasions" . . "Mongol Empire" . "1232 invasion of Korea" . . "conquer Korea" . "Mongol invasion" . "Mongols" . "invaded Korea" . . "pillaged the Korean Peninsula" . . "invade Korea" . "Mongol invasions of Korea" . "invaded by the Mongols" . "Mongol campaigns into Goryeo Korea" . "Sixth Mongol invasion of Korea" . . . "Mongol invasion of Korea" . "Goryeocapitulates in 1259, and becomes avassalbetween 1270 and 1356 of theYuan dynasty" . . "Mongol Invasions of Korea" . "Mongol invasions" . "the invasion of Korea" . . "1247 invasion of Korea" . . . "Second Mongol invasion of Korea" . "final destruction of the ruling Ch'oe family of Korea" . "Mongol victory." . . . . . . "1231\u20131259 invasion of Korea" . "prolonged conflict" . "fierce resistance against the Mongol Empire" . . . . . "invading Korea" . "30 years of war" . . .