The culture of Northern Africa differs greatly from Southern Africa's because of the influence of what religion on the region.

Judaism

Islam

Christianity

Animism

Islam. Northern Africa was conquered by Islamic Caliphate back in the 7th century. All this region, which encompasses the Sahara desert, from Morocco in the west to Somalia in the East and from Tunisia in the North to Chad in the South, has a vast Islamic majority. In Sub-Saharan Africa, Islamic populations are a minority, while most people there are Christian or they believe in animistic religions.

I believe it's islam