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Conflicts in 1240

  • Siege of Kiev (1240)Batu Khan and the Mongols began their invasion in late 1237 by conquering the northeastern Rus' Principality of Ryazan. Then, in 1238 the Mongols went…
  • Battle of the NevaPope Honorius III received petitions regarding new crusades in the early 1230s. He declared an embargo against trade with pagans in the region.