Columbia subject headings:
Africa--Colonial influence--History.
Africa--Colonization--History.
Africa--Historiography.
Colonies--Africa--History.
Slave trade--Africa--History.
Slavery--Africa--History.
Harvard subject headings:
Africa--Colonial influence--History.
Africa--Colonization--History.
Africa--Historiography.
Colonies--Africa--History.
Slave trade--Africa--History
Slavery--Africa--History
Princeton subject headings:
Africa--Colonial influence--History.
Africa--Colonization--History.
Africa--Historiography.
Colonies--Africa--History.
Slave trade--Africa--History.
Slavery--Africa--History.
Slavery--Justification--History.