عدد المسلمين ينخفض في أفريقيا الى الثلث في القرن الماضي

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According to the World Book Encyclopedia, Islam is the largest religion in Africa, followed by Christianity. According to Encyclopedia Britannica, 45% of the population are Muslims, 40% are Christians and less than 15% are non-religious or follow African traditional religions. Islam in Africa is increasing, as many Bantu speakers embrace Islam especially in central and eastern Africa

http://en.wikipedia.org/wiki/Islam_in_Africa