why did the united states switch from a policy of isolation to a policy of imperialism in the late 1800???

The term globalization is best defined as: a. a reduction in the political and military power of imperial countries over their colonies. b. an increasing interaction among citizens and businesses of countries around the world. c. the spread of philosophies based on the right of all nations to political independence. d. the establishment of international laws protecting all people's human and civil rights.

During the cold war, the united states was involved in certain regional conflicts due to fears later called the domino theory, which stated which concept?

Someone who accepted the beliefs of social darwinism would have also agreed with which of these statements?