Christianity Explodes in Sub-Sahara Africa

There are now twice as many Christians as Muslims in Sub-Sahara Africa, "where once Christians and Muslims combined made up less than a quarter of its population, the region now has 21 percent of the world[']s Christians."  

This video notes that the Muslims and Christians have no hard feelings toward each other, which leads me to believe that they have a good sense of religious tolerance and the ability to freely communicate what they believe.