The correct answer is A) it kept nations from cooperating to achieve shared goals.
Imperialism hurt rather than help European nations in that it kept nations from cooperating to achieve shared goals.
Many incidents happened before World War 1, and after it, the issues and conflicts that derivated in World War II. Totalitarianism and imperialism not only did not help cooperation between European nations but it tensed relationships and was a reason for more confrontation and aggression. Ethnic and racial differences, as well as imperialistic ideas, provoked damages between countries that could not be healed after the war.