Arabs By MATIN21 570 Mohammed Born Mohammed Is Born Jan 1, 632 Message to Mohammed from God Jan 1, 632 Mohammed Dies Jan 1, 632 Abu Bakr CALIPH Jan 1, 634 Umar Becomes Caliph Jan 1, 634 Abu Bakr Dies Jan 1, 635 Damascus Captured Jan 1, 644 Umar dies Jan 1, 644 Uthman Is Appointed Caliph Jan 1, 656 Uthman Murdered