European competition for colonies, resources, and world markets through the use of militarism was one of the causes of . A.
the Russian Revolution
B.
the Cold War
C.
World War I
D.
World War I

C or D World War 1. (Pick whichever option says World War One)

Explanation:

As these European powers such as Britian, France, Germany, Austria-Hungary, and Russia were industrializing due to the coming of a modern age (20th Century). Resources had become the primary target of vast colonial empires. Strategic territories as well such as British occupied Eygpt or India had multiple advantages over other countries through the African and Asian markets. Germany in comparison had a little number of colonies in Africa and South-East Asia. Competition like this would favor a World War to gain an advantage over rival empires.

arresting and exicuting citizens