West African countries such as Nigeria, Benin, Togo and Ghana have the same dynamics. You will have all Christians in the south and Muslims in the north.<quoted text>In my eyes Igbo and Yoruba are basically the same, ask a Nigerian and they'll tell you they're completely different go on a DNA ancestry study and it is as if Igbo doesn't exist they just call them all ''Yoruba''.
The way I see Nigeria in a nutshell:
Southern Nigeria - Igbo-Yoruba/Christians
Northern Nigeria - Hausa-Fulani/Muslims
Fulani are distinct from other west Africans with a so far unknown origin but I believe they originated in North Africa, modern day North Sudan.
The northern regions of these countries consist of similar tribe such as Fulani, and Hausa and the culture, language and religion is basically the same with Hausa, Islam being the language and religion of practice.
While in the southern states of Ghana, Nigeria,Togo and Benin you might not have the similar language, the culture and religion is basically the same. You will find mostly Christians.