Columbia subject headings:
Diplomacy.
Europe--Politics and government--1871-1918.
Great Britain--Foreign relations.
Treaties.
World War, 1914-1918--Causes.
Harvard subject headings:
Diplomacy
Europe--Politics and government--1871-1918.
Great Britain--Foreign relations--19th century.
Great Britain--Foreign relations--20th century.
Great Britain--Foreign relations.
Treaties
World War, 1914-1918--Causes
Princeton subject headings:
Diplomacy.
Europe--Politics and government--1871-1918.
Great Britain--Foreign relations.
Treaties.
World War, 1914-1918--Causes.