Columbia subject headings:
Great Britain--Colonies--America--Economic conditions.
United States--Economic conditions--To 1865--Regional disparities.
Harvard subject headings:
Great Britain--Colonies--America--Economic conditions--Regional disparities.
United States--Economic conditions--To 1865--Regional disparities.
Princeton subject headings:
Great Britain--Colonies--America--Economic conditions--Regional disparities.
United States--Economic conditions--To 1865--Regional disparities.