The Commonwealth of Byzantium

  • Period: 313 to 337

    Reign of Constantine

  • 325

    Council of Nicaea

  • Period: 329 to 379

    Life of St. Basil of Caesarea

  • 330

    Transfer of Roman Government to Constantinople

  • Period: 527 to 565

    Reign of Justinian

  • Period: 717 to 741

    Reign of Leo III

  • Period: 726 to 843

    Iconoclastic Controversy

  • 800

    Missions of St. Cyril and St. Methodius to the Slavs

  • Period: 976 to 1025

    Reign of Basil II, the "Bulgar-Slayer"

  • 989

    Conversion of Prince Vladimir of Kiev to Orthodox Christianity

  • 1054

    Beginning of the Schism Between the Eastern and Western Christian Churches

  • 1071

    Battle of Manzikert

  • Period: 1202 to 1204

    Fourth Crusade

  • 1453

    Fall of Constantinople