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By area

Africa

• The Manden region rises against the Kaniaga Kingdom. This is the beginning of a process that will lead to the rise of the Mali Empire.

  Asia

• February 9 - Mongol conquest of the Jin dynasty: Siege of Caizhou - Song Dynasty Chinese and Mongolian armies occupy the Jurchen capital at Caizhou, and Emperor Aizong of Jin commits suicide, marking the collapse of the Jin Dynasty.

  Europe

• Upon the death of Knut Långe, the deposed Erik Eriksson returns as king of Sweden, possibly after a small war between the two of them. It is also possible that Knut dies of natural causes, and Erik peacefully then returns as king.
• Pope Gregory IX calls for a crusade against Bosnia, and replaces the Bogumil Bosnian Bishop with a Catholic Dominican German, Johann.
• King Andrew II of Hungary proclaims herzeg Coloman as Ban of Bosnia, who passes it on to Prijezda, a cousin of Ban Matej Ninoslav, despite Matej being the legitimate Ban of Bosnia.
• Sancho II of Portugal conquers the cities of Aljustrel and Mértola from the Muslims.

  By topic

• Saint Dominic is canonized.
• Pope Gregory IX releases the Nova Compilatio Decretalium or Decretales Gregorii IX.