"Perhaps, but Shaka Zulu only influenced his native Southern Africa."
I just using that one country as an example. Similar things could be said about most countries. I would say in modern times MLK is probably as influential globally as St. Thomas.
"I don’t quite understand the point that you are trying to make."
I was asking since, according to you, Augustine wasn't really European should his religious and theological influence be considered a North African influence on Europe or a European invention?
"The zanj were mostly slaves."
According to the History of Zanzibar article:
"The Sultan of Zanzibar controlled a substantial portion of the East African coast, known as Zanj, and extensive inland trading routes."
"Zanj" is also a general reference to the Swahili coastline.
"If these people had merely been former black Africans slaves then he wouldn’t have said that."
He was describing Evolution (though a physical determinist version of it). He believed that black people are black because of the heavy sunlight of Africa. Which is pretty close to the truth.
The first Bedouin guy you showed is notably lighter than most sub-Saharan Africans. The Yemenis you showed could possibly be Afro-Arabs since there is an Afro-Arab population in Yemen.
Al-Jahiz specifically differentiates Bedouins and Arabs from the Zanj and refers to slavery when talking about their physical strength:
http://en.wikipedia.org/wiki/Al-Jahiz#The_Essays
If you type Afro-Arab into Google search you see many result that look different from the pictures you linked:
http://www.google.com/images?hl=en&q=Afro-Arab&um=1&ie=UTF-8&source=og&sa=N&tab=wi&biw=1024&bih=572
"You are contradicting yourself"
I called Al-Jahiz black because he considered himself that and I call the Zanj black because that's what the vast majority of medieval sources consider them and people of that region today consider themselves black.