How was imperialism a cause of world war i? (1 point) rivalry over overseas territories increased tensions in europe. colonies' efforts to gain independence increased tensions in europe. alliances among overseas territories increased tensions in europe. efforts to stimulate trade increased tensions in european colonies?

The correct answer is C) Alliances of overseas territories increased tensions in Europe.

Imperialism was a cause of World War 1 in that Alliances in overseas territories increased tensions in Europe.  

There were many causes that iniciated World War 1. Just in the case of Imperialism reasons, nations formed secret alliances to maintain and control other territories to protect their political and economic interest. When Archduke Franz Ferdinand and his wife were assassinated in Sarajevo, the Austria-Hungary government declared war on Serbia and this started the armed conflict in World War 1. Nationalism and Militarism were the other causes of war as well as Alliances and Imperialism.  

secretly cooperate with one another.

b). (sounds as the best answer)