What event caused the Mongol withdrawal from Europe in 1242?

The death of Ögedei Khan caused the Mongol withdrawal from Europe in 1242. Ögedei, the third son of Genghis Khan and the empire’s Great Khan, died on 11 December 1241, during the Mongol campaign in Central Europe.

Mongol princes and senior commanders were expected to participate in the quriltai, the assembly that selected a new Great Khan. News of Ögedei’s death therefore created a powerful political reason for the imperial princes to return east. The withdrawal began in early 1242, and Mongol forces had left Central Europe by the middle of that year.

The decision was not necessarily caused by one factor alone. Historians also point to costly sieges, resistance, difficult terrain, stretched supply lines, and conflicts involving the Cumans. Even so, Ögedei’s death is the standard answer in general histories and quiz references because it directly disrupted the succession and required the ruling elite’s presence.

The Battle of Legnica was a Mongol victory in Poland, not the reason for withdrawal. Winter and revolt in Persia are also sometimes proposed as background pressures, but neither is the canonical answer to this question.