Columbia subject headings:
African Americans--History.
African diaspora.
Black people--America--History.
Black people--Politics and government.
Slavery--America.
Harvard subject headings:
African Americans--History
African diaspora
Black people--America--History
Black people--Politics and government
Slavery--America.
Princeton subject headings:
African Americans--History.
African diaspora.
Black people--America--History.
Slavery--America.