Columbia subject headings:
Harvard subject headings:
Africa, West--Commerce--Europe--History.
Africa, West--Foreign relations--Europe.
Europe--Commerce--Africa, West--History.
Europe--Foreign relations--Africa, West.
Slave trade--Africa, West--History--17th century.
Slave trade--Africa, West--History--18th century.
Slave trade--Europe--History--17th century.
Slave trade--Europe--History--18th century.
Princeton subject headings:
Africa, West--Commerce--Europe--History.
Africa, West--Foreign relations--Europe.
Europe--Commerce--Africa, West--History.
Europe--Foreign relations--Africa, West.