I just did. How can you ask me to make an argument when the "argument" is already in your post. Ethiopia, Sudan and Egypt are all examples of black cilivations with written texts prior to Islamic presence on the continent. I also proceeded to include some more without literacy who also can be included. What are you trying to push? That "written language was the lone gauge of an civilization? It is not. Never has been. I fail to see what you're point you're trying to make other than "Islam civilized Africans". I would rather you just come out and say it so we can laugh at just how mentally lost and pathetic most black muslims are.
Reread my post:
SHOW US non-Muslims outside of Ethiopia, Ancient Egypt and Ancient Nubia have well educated/literate cities pre-colonization. I dare you.
So far you did not. And I never claimed Islam civilized Africa you idiot. I made a point that Muslim Africans on average were more literate than non-Muslim Africans which is a fact. Unless you think being literate is the sole thing that makes a civilization. You trying to claim I'm Muslim only makes you look more desperate.