a key factor of the empires the united states and european countries built in the late 1800s was…

a key factor of the empires the united states and european countries built in the late 1800s was: totalitarianism. patriotism. chauvinism. nationalism.

a key factor of the empires the united states and european countries built in the late 1800s was: totalitarianism. patriotism. chauvinism. nationalism.

Answer

Brief Explanations:

Nationalism, which is the identification with one's own nation and support for its interests, was a driving force. In the late 1800s, it led countries to expand and build empires. Totalitarianism (a system where the state has total control) was more of the 20th - century. Patriotism is love for one's country but not as directly related to empire - building as nationalism. Chauvinism is an extreme form of patriotism but not the key factor here.

Answer:

nationalism.