神权共和时期  (573 AD～August 23, 634 AD)

Start End Reign 632 AD 634 AD 

　　Abu Bakr Abdullah (573 -634 years on August 23) Arabic name: ابو بكر الصديق. Claimed that Islam in the history of the first caliph (reigned 632 -634).
　　Under the leadership of the Abu Bakr, apostate followers to return to the ranks of the tribe, the Arabs began a conquest of war. Abu Bakr with the Sassanian dynasty and the Byzantine Empire in the war were won. After his death, the Caliph Umar the Herta Buji Cheng duties.