The Spread of Christianity

  • Period: 622 to 632

    Conquests of Mohammed

  • Period: 632 to 661

    Conquests of the First Four Caliphs

  • Period: 661 to 900

    Omayyad and Abbasid Conquests

  • Period: 1096 to 1099

    The First Crusade

  • Period: 1147 to 1149

    The Second Crusade