Gibney's timeline By jgibney 610 Muhammad receives first revelation 610 Muhammad receives first revelation 622 Hijrah starts islamic calendar 630 Muhammad Makes Mecca Great 632 Abubaker becomes Islam Leader 634 Umar becomes second Caliph 644 Uthman becomes third Caliph 656 Ali becomes 4th Caliph 661 Umayyad takes control 680 Hussein killed at Karbara 692 Dome of Rock Completed 711 Muslims enter Spain 732 Charles destroys Islamic Army 750 Abbasid Caliphate builds Baghdad 780 Al-khwarizmi is born 972 Al-Azhar University is found 1025 Ibn makes canon medicine 1048 Omar Khayyan is Born 1099 Christian armies recapture Jerisalem 1187 Salidon retakes city Jerusalem 1258 Mongols destroy the Baghad
