Tolerance and Tension: Islam and Christianity in Sub-Saharan Africa

2008-2009 Sub-Saharan Africa Survey in 19 countries

As of 1900, both Muslims and Christians were relatively small minorities in the region. Since then, however, the number of Muslims living between the Sahara Desert and the Cape of Good Hope has increased more than 20-fold, rising from an estimated 11 million in 1900 to approximately 234 million in 2010.