Columbia subject headings:
Mexico--Foreign relations--Mexico.
Mexico--History--19th century.
Mexico--History--20th century.
United States--Foreign relations--Mexico.
Harvard subject headings:
Mexico--Foreign relations--United States.
Mexico--History--19th century
Mexico--History--20th century.
Peasant uprisings--Mexico--History.
Revolutions--Mexico--History.
United States--Foreign relations--Mexico.
Princeton subject headings: