I took a course in
Minorities in American Society at the University of Nevada, Reno and recall sitting next to a man from the Ivory Coast who was royalty according to him and the Professor. He might have been pulling my leg but he had made some of the most racist comments I have heard about the African Americans whose ancestors had come here while his ancestors ruled in some capacity. They probably stayed in power by aligning with the slave traders.
On another note, for this class, I did a presentation on my grandfather's fight to keep his land on Cape Cod. His ownership was being challenged in court by the Wampanoag who were asserting they still were a tribe under US laws and had a claim to this land.
Mashpee Wampanoag Tribe - Wikipedia