Columbia subject headings:
Competition, International.
Industries--United States--History.
United States--Economic conditions.
United States--Politics and government--19th century.
United States--Politics and government--20th century.
Harvard subject headings:
Competition, International.
Industries--United States--History
United States--Economic conditions.
United States--Politics and government--19th century.
United States--Politics and government--20th century.
Princeton subject headings:
Competition, International.
Industries--United States--History.
United States--Economic conditions.
United States--Politics and government--19th century.
United States--Politics and government--20th century.