Columbia subject headings:
African Americans--Race identity.
Black people--History.
Black people--Nile River Valley--History.
Nile River Valley--History.
Racism--History.
Harvard subject headings:
African Americans--Race identity
Black people--History
Black people--Nile River Valley--History.
Nile River Valley--History.
Racism--History
Princeton subject headings:
African Americans--Race identity.
Black people--History.
Black people--Nile River Valley--History.
Nile River Valley--History.
Racism--History.