Omar

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Omar (active c.581–644) ( Umar) Second Caliph, or ruler, of Islam. He was converted to Islam in 618, and became a counsellor of Muhammad. In 632, he chose the first caliph, Abu Bakr, and succeeded him in 634. Under his rule, Islam spread by conquest into Syria, Egypt, and Iran, and the foundations of an administrative empire were laid.

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