Why don’t you get along with everyone?
There is a popular book called Why Are All The Black Kids Sitting Together In The Cafeteria by Beverly Daniel Tatum that explores the reason why we often see African Americans sitting in school cafeterias, especially in predominantly white schools.
This self-segregation by African Americans happens beyond cafeterias and often causes Africans to raise a brow.
Many Africans, perhaps with the exception of some Southern Africans and East Africans such as South Africans and Kenyans, have not experienced white domination and may not understand its vestiges. As such, the comfort of self-segregation is hard for Africans to understand. Nonetheless, this question is insensitive.