History of the Byzantines By FrazerGTV Period: 300 to Jan 1, 1500 History of the Byzantines 330 Emperor Constantine 1 Founded the Byzantine Capital 532 Nika Revolt 537 Hagia Sophia Completed 562 General Belisarius Military Campaigns Jan 1, 634 Early Islamic Military Campaigns into Byzantine Territory Jan 1, 970 Emperor Basil 2 Military Conquests of Bulgaria Jan 1, 1054 Great Schism Mar 1, 1095 Emperor Alexios 1 contacts Pope Urban 2 for military help in Middle East Jan 1, 1202 Fourth Crusade May 29, 1453 Fall of Constantinople to the Ottoman Turks