Which statement best describes a significant cause of World War II?
O
A. The economic boom that followed World War I allowed countries
to build up huge militaries.
O
B. The Treaty of Versailles, which ended World War I, left lasting
resentments in many countries.
O
C. The rise of imperial states in Asia caused European powers to
unite for their common defense.
O
D. The League of Nations encouraged European states to form
secret military alliances.
