(A) Militarism
(B) ** Imperialism
(C) Alliances
(D) Nationalism
EXPLANATIONS BELOW
Concept note-1: -Imperialism is a system where a powerful nation-state seizes or controls territories outside its own borders. These territories are claimed and governed as colonies. 2. Several European nations maintained empires in the decades before World War I.
Concept note-2: -European Expansionism The expansion of European nations as empires (also known as imperialism) can be seen as a key cause of World War I, because as countries like Britain and France expanded their empires, it resulted in increased tensions among European countries.
Concept note-3: -Imperialism. Q. This word means seeking other colonies; it was a cause of World War I. Militarism. Imperialism.
Concept note-4: -Western European empires like Great Britain and France had overseas colonies around the world, while eastern empires like Austria-Hungary and Russia ruled European and North Asian territories connected by land.
Concept note-5: -What was the main cause of World War I? World War I began after the assassination of Austrian archduke Franz Ferdinand by South Slav nationalist Gavrilo Princip on June 28, 1914.