:Article is composed of three parts, which 1-How Islam spread into sub-Saharan region of West Africa, and the great civilizations it established there, taking its inhabitants out of paganism to the worship of One God. Part 1: Islam reaches West Africa, and a history of the Islamic Empire of Ghana. 2-How Islam spread into sub-Saharan region of West Africa, and the great civilizations it established there, taking its inhabitants out of paganism to the worship of One God. Part 2: A history of the empires of Mali and Songhay. 3-How Islam spread into sub-Saharan region of West Africa, and the great civilizations it established there, taking its inhabitants out of paganism to the worship of One God. Part 3: A brief history of the Islamic Empires of Kanem-Bornu and Hausa-Fulani Land.