Middle ages By aspireacademy Period: 250 to 325 Arius lives and teaches Arianism Period: 306 to 337 Regin of Constantine the Great Period: 325 to 325 First council of Nicaea outlaws Arianism 410 Visgoths sack Rome under Alaric 451 Battle of Chalons: Huns vs. Romans and Goths Although June 20 is the traditional date, some sources indicate the battle might have been fought on September 20, 451 453 Death of Attila the Hun 455 Vandals sack Rome under Genseric 476 Fall of the Western Roman Empire: Odoacer deposes Romulus Augustulus Period: 476 to Mar 2, 2022 Odoacer rules as kng of Italy Period: 527 to 565 Reign of Justinian I Period: 533 to 534 Byzantine armies conquer Vandal kingdom in North Africa Period: 570 to Jun 8, 632 Life of Muhammad Jan 1, 622 Muhammad flees from Mecca Period: Jan 1, 714 to Mar 2, 2022 Pepin the Short Period: Apr 2, 742 to Mar 2, 2022 Charlemagne Jan 1, 750 Muslim empire is at its largest Jan 1, 1054 Eastern Church officially splits from Western Church Period: Apr 8, 1204 to Apr 13, 1204 Crusaders capture and sack Constantinople Jan 1, 1261 Byzantines drive out the Crusaders Mar 2, 2022 Treaty of Verdun divides Charlemagne's empire into thirds among his grandsons Mar 2, 2022 Charlemagne crowned Holy Roman Emperor in Rome Period: Mar 2, 2022 to 526 Theodoric the Great (the Ostrogoth) rules Italy Period: Mar 2, 2022 to Oct 22, 741 Charles Martel