WORLD HISTORY

Detailed explanation-1: -In 1231, Ögedei Khan ordered the invasion of Korea. The experienced Mongol army was placed under the command of General Saritai (not to be confused with Sartaq, a later Mongol khan ).

Detailed explanation-2: -The Mongol invasions of Korea (1231-1273) consisted of a series of campaigns by the Mongol Empire against Korea, then known as Goryeo, from 1231 to 1259.

Detailed explanation-3: -Rather than annexing the territory as it did to most conquered lands, the Mongol Empire granted some autonomy to the Korean kingdom as its vassal state. Even though the treaty granted autonomy, the Mongol empire often interfered in the affairs of the Goryeo court, sometimes deposing and exiling kings.

Detailed explanation-4: -Drawing upon the considerable maritime skills of their Korean and Chinese subjects, the Mongols launched a seaborne invasion in 1274. After crossing the strait of Tsushima, the Mongols subdued the islands of Tsushima and Iki after hard-fought battles.