Rethinking the social structure of ancient Eurasian nomads: Current Anthropology research

I have failed to find anything new of significance in this article. They still manage to present an ancient world without any African/Negro/Black presence or contribution. Yet, when the time comes to diminish how Europeans destroyed Africa and Africans with slavery (then and now) all kind of evidence becomes available to prove that black Africans were enslaving themselves way before whites sailed to Africa and paid to have them kidnapped. The very word Eurasia is an attempt to continue to omit any Negro contribution to history, and give every credit to every other group except Negro Africans. Thus, even ancient Egyptians are Eurasians, never Negro Africans.