What are examples of the impact of the spread of christianity and islam throughout africa? ! will mark the !

I understand it's a little lengthy but I wanted to ensure you had all the information you would need!

While sub-Saharan Africa has almost twice as many Christians as Muslims, on the African continent as a whole the two faiths are roughly balanced, with 400 million to 500 million followers each. Since northern Africa is heavily Muslim and southern Africa is heavily Christian, the great meeting place is in the middle, a 4,000-mile swath from Somalia in the east to Senegal in the west.

In little more than a century, the religious landscape of sub-Saharan Africa has changed dramatically. As of 1900, both Muslims and Christians were relatively small minorities in the region. The vast majority of people practiced traditional African religions, while adherents of Christianity and Islam combined made up less than a quarter of the population.

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. The number of Christians has grown even faster, soaring almost 70-fold from about 7 million to 470 million. Sub-Saharan Africa now is home to about one-in-five of all the Christians in the world (21%) and more than one-in-seven of the world’s Muslims (15%).

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thomas jefferson is the answer