Question

Which was a cause of World War I?

A. the unification of separate German states into one nation

B. Austria-Hungary's imperialist ambitions to dominate the Balkans

C. the invasion of Belgium by German troops

D. Russia's desire to stay out of military alliances

Answer 1

"The invasion of Belgium by German troops" is the reason among the reasons given in the question that was a cause of World War I. The correct option among all the options that are given in the question is the third option or option "C". I hope that the answer has helped you.