Final answer:
Islam spread after the death of Muhammad through military conquests.
Step-by-step explanation:
After the death of Muhammad, one way in which Islam spread was through military conquests. The early Islamic empire, known as the Caliphate, launched military campaigns and conquered vast territories, including parts of the Middle East, North Africa, and Europe. The initial expansion of Islam was driven by both religious zeal and territorial ambitions, and these conquests contributed to the spread of Islamic culture, law, and governance.
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