
Events 1240s – End of 7th Crusade
1254 End of the 7th Crusade Events 1240: Russians defeat the Swedish army at the Battle of the Neva. 1241: Mongol Empire defeats Hungary at the Battle of Mohi and defeats Poland at the Battle of Legnica. Hungary and Poland ravaged. 1242: Russians defeat the Teutonic Knights at the Battle of Lake Peipus. 1243–1250: Second Holy Roman Empire–Papacy War. 1244: Ayyubids and Khwarezmians defeat the Crusaders and their Arab allies at the Battle of La Forbie. 1249: End of the Portuguese Reconquista against the Moors, when King Afonso III of Portugal reconquers the Algarve. Arts Robert Grosseteste translates Aristotle‘s Nicomachean Ethics from Greek into Latin, which marks the true start of the rediscovery of the philosopher by Medieval Europe Science Roger Bacon publishes a major scientific work, including writings of convex […]