Islam had spread to the Arabian Peninsula, North Africa, and the Iberian Peninsula 100 years after Muhammad's death.
The region that shows how far Islam had spread 100 years after Muhammad's death is the Arabian Peninsula, North Africa, and the Iberian Peninsula. After Muhammad's death, Arab military forces expanded Islam's reach across these regions, under the Umayyad Caliphate of the 7th and 8th centuries, stretching from Spain and Portugal to Pakistan.
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