Columbia subject headings:
Europe--Politics and government--1918-1945.
Munich Four-Power Agreement
United States--Foreign relations--1933-1945.
World politics--1933-1945.
Harvard subject headings:
Europe--Politics and government--1918-1945.
Munich Four-Power Agreement
United States--Foreign relations--1933-1945.
World politics--1933-1945
Princeton subject headings:
Europe--Foreign relations--United States.
United States--Foreign relations--Europe.
World War, 1939-1945--Causes.