This article provides an overview of Islam, covering its history, key beliefs, and different sects. It discusses the life of Muhammad, the influence of the Saud family and Wahhabi Islam, as well as the spread of Islam in various regions. The article also touches on religious obligations in Islam and the different branches such as Sunni, Shia, Ismailis, and Fatimids. It includes a glossary, bibliography, and index for further reference.