Religion
Islam

Islam is a monotheistic religion based on the Quran, one of the holy books considered by Muslims to be revealed by God, and on the teachings (hadith) of the Islamic prophet Muhammad, a major political and religious figure of the 7th century CE. Islam is based on the unity of all religious philosophies and accepts all of the Abrahamic prophets of Judaism, Christianity and other Abrahamic religions before Muhammad. It is the most widely practiced religion of Southeast Asia, North Africa, Western Asia, and Central Asia, while Muslim-majority countries also exist in parts of South Asia, Sub-Saharan Africa, and Southeast Europe. There are also several Islamic republics, including Iran, Pakistan, Mauritania, and Afghanistan. With about 1.8 billion followers (2015), almost a quarter of earth's population are Muslims.

Other denominations of Islam include Nation of Islam, Ibadi, Sufism, Quranism, Mahdavia, Ahmadiyya and non-denominational Muslims. Wahhabism is the dominant Muslim schools of thought in the Kingdom of Saudi Arabia.
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