5 events the spread of Christianity and Islam By Waldron Period: 560 to 661 Life of Muhammad Period: 661 to 750 The Umayyads Period: 751 to 983 the Abbasids Period: 984 to 1289 The Sejuks and Fatimids Period: 1290 to 1918 The Ottomans, Safavids and Mughals