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*1235 Death of [[Sava of Serbia]].
*1237 Golden Horde begin [[Church of Russia#Mongol Tartars over Russia (1237-1448)|subjugation of Russia]].
*1240 Mongols sack Kiev; Prince [[Alexander Nevsky]] defeats Swedish army at [[Battle of the Neva]].
*1242 [[Alexander Nevsky]]'s Novgorodian force defeats Teutonic Knights in [[w:Battle of the Ice|Battle of Lake Peipus]], a major defeat for the Catholic crusaders.
*1244 Jerusalem conquered and razed by [[w:Khwarezm|Khwarezmian]] mercenaries (Oghuz Turks) serving under the [[w:Ayyubid dynasty|Ayyubid]] ruler of Egypt Salih Ayyub, triggering Seventh Crusade.
