Columbia subject headings:
Slavery--Economic aspects--Southern States.
Southern States--Economic conditions.
Southern States--History--1775-1865.
Harvard subject headings:
Slavery--Economic aspects--Southern States.
Southern States--Economic conditions.
Southern States--History--1775-1865.
Princeton subject headings:
Slavery--Economic aspects--Southern States.
Southern States--Economic conditions.
Southern States--History--1775-1865.