1240s

Asia

• December 6 – Batu Khan and the Golden Horde sack the Ruthenian city of Kiev.
• Tuan Mash'ika, an Arab, travels and introduces Islam to Sulu.

Europe

• July 15 – Battle of the Neva: Russian prince Alexander Nevsky defeats the Swedes, saving the Novgorod Republic from a full-scale enemy invasion from the North.
• The civil war era in Norway ends.
• The Flemish village Kaprijke is recognized as a city.
• Sancho II of Portugal conquers the cities of Ayamonte and Cacella from the Muslims, as part of the Reconquista.^[1]

Religion

• June 12 – The Disputation of Paris begins at the court of Louis IX of France, where four rabbis defend the Talmud against Nicholas Donin's accusations of blasphemy.
• Saint Maurice starts to be portrayed as a Moor.

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