Up to 800,000 enslaved Africans settled in Egypt with little demographic trace

Evidence

In an article on black slavery in Egypt,Terence Walz discusses the puzzle presented by what he calls the “minimal impact black Africans have had on the biological make-up of Egyptians.” Walz asks, “If it is true that as many as 800,000 Africans were forcibly settled in the country during the eighteenth and nineteenth centuries, why is there so little ‘African’ imprint on the general population?” — Eve M. Troutt Powell, A Different Shade of Colonialism_…, 112