(A) a decline in the policy of imperialism
(B) ** the existence of opposing alliances
(C) an increase in acts of aggression by England
(D) the spread of communism throughout Europe
EXPLANATIONS BELOW
Concept note-1: -As British and French expansionism continued, tensions rose between opposing empires, including Germany, Austria-Hungary and the Ottoman Empire, leading to the creation of the Allied Powers (Britain and France) and Central Powers (Germany, Austria-Hungary and the Ottoman Empire) during World War I.