Why did non-moslem countries in africa not develope a written language?

does language and science advance civilization ?

or is a machete designed to cut off the breasts off of women and the hands off of children

or for some fat black tyrant to enjoy tacky bling

much like afro americans despoil their neighborhoods ?

could it be a genetic thing ?

or are , chad, ethiopia, somalia, uganda, nigeria, sierra lione, ghana, liberia, ivory coast, zimbabwe and countless other african countries just populated by a race that didn't invent a miscroscope or discover a vaccine. and think that having sex with a virgin will cure aids.

i wish black americans would tell me what they have to be so proud about, while they don't take care of their children, and don't teach them a respect for civilty or education.

why are they always so loud and obnoxious and violent ?

could it be genetics ?

re: praise t

does the truth hurt ?

I hate to burst your obvious ethnocentric bubble, but evidently you weren't at school when they were teaching ancient history, and any history pre-dating Islam. I give you the ancient Egyptians, one of the most advanced ancient civilizations known to mankind, the Hebrew slaves in Egypt also had writing, the Greek and Phoenicians had colonies in North Africa. All these people had well developed systems of writing. Another prominent North African city-state was Carthage. If you wish to know more about the great black civilizations of Africa, once the Moslem armies were on the march, the African civilizations mostly abandoned their native gods and writings in favor of Arabic, just like the people of North Africa that we call Arabs did.