Cause he promised Muslims that he would closely follow Muhammad's example. Shortly after the Prophet's death, some clans on the Arabian peninsula abandoned Islam.
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The first Caliph was Abu Bakr Assidik.
Abu Bakr ruled as a Caliph for 27 months.
Perhaps you are referring to abu Bakr? Abu Bakr was one of Muhammad's fathers-in-laws and became the first Caliph.
Abu Bakr
Abu bakr
Only Sunnis agreed on Abu Bakr as first Caliph after prophet Muhammad death. The Shiites believed that the Caliph should from the prophet family and accordingly they supported Ali to be the first caliph and not Abu Bakr. However, the Shiites accepted the majority selection of Abu Bakr and supported him and Ali (God pleased with him) was a closeadviser to Abu Bakr. See for more information the related question below
Abu Bakr. Then Omar. Then Othman. Then Ali.
The first Caliph Abu Bakr Assedik
was the father of muhammad and he was the first caliph after his death
The first Rightly Guided Caliph Hazrat Abu Bakr Siddique RAU.
Abu Bakr took the office of caliph in 632 A.D. He assumed it until his death in 634 A.D, meaning that his caliphate lasted for around 2 years.
The Muslims leader (Caliph) after Abu Bakr was Omar Ibn Alkhattab (as the second Caliph).