Islam was expanded by missionaries, trade, pilgrimage, and military conquest. Over time, Arab Muslim warriors expanded their empire and occupied large lands.
Islam's rapid spread can be attributed to a variety of factors. First, Mecca had access to numerous international commerce channels. Their military's extensive territorial conquests were another significant factor. The Muslims' impartial treatment of conquered peoples was a third factor.
Islam was created by Muhammad, who also proclaimed the Qur'an, the religion's holy book. From the time of his birth in Mecca around the year 570 CE until the time of his death in Medina in the year 632, Muhammad lived his whole life in what is now Saudi Arabia.
Muslims consider Allah, or "God," to be the only true God. They adhere to the teachings of Allah's messenger, Prophet Muhammad (Peace Be Upon Him). Muslims hold that the Islamic faith has always been and that several Prophets gradually revealed it to people on Earth.
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