Ishmael did not start Islam. Islam was founded by the Prophet Muhammad in the 7th century AD.
Islam did start in the so-called "Saudia-Arabia";
Islam came out to the world at the start of Creation
Islam started by start of universe creation. Refer to related question below.
Islam started by start of universe creation. Refer to question below for details.
Islam was declared to human being by Abraham.
he started preaching Islam from his own FAMILY
Muhammad [S.A.W] spread the word of Islam first
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Islam
Islam started by start of universe creation and even before. Refer to question below for details.
Islam religion was originated by start of universe creation. Refer to related questions below.