1240s

Millennium:	2nd millennium
Centuries:	12th century – 13th century – 14th century
Decades:	1210s 1220s 1230s – 1240s – 1250s 1260s 1270s
Years:	1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
Categories:	Births – Deaths – Architecture; Establishments – Disestablishments

The 1240s was a decade that began on 1 January 1240 and ended on 31 December 1249.

Events

Batu Khan and the Golden Horde sack the Ruthenian city of Kiev.
Mandinka prince Sundiata Keita defeats Sosso king Soumaoro Kanté at the Battle of Kirina, beginning the Mali Empire.
July 15 1240 – Russian prince Alexander Nevsky defeats the Swedes in the Battle of the Neva, saving Russia from a full-scale enemy invasion from the North.
End of the civil war era in Norway.
Saint Maurice is started to be portrayed as Moor.
April 5 1241 – Mongols of Golden Horde under the command of Subotai defeat feudal Polish nobility, including Knights Templar, in the battle of Liegnitz
April 27 1241 – Mongols defeat Bela IV of Hungary in the battle of Sajo.

Millennium:	2nd millennium
Centuries:	12th century – 13th century – 14th century
Decades:	1210s 1220s 1230s – 1240s – 1250s 1260s 1270s
Years:	1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
Categories:	Births – Deaths – Architecture Establishments – Disestablishments