The United States' acquisition of the Philippines, Puerto Rico, and Hawaii are all examples of late-nineteenth century A) imperialism. B) isolation. C) populism. D) progressivism.

A) imperialism

Explanation:

The United States' acquisition of these territories in the late-nineteenth century is an example of imperialism. Imperialism is a policy of gaining political and economic control of a foreign territory, usually through military force. Although the practice has been common throughout history, the term is usually associated with the expansion of Western Powers and Japan during the late 19th and early 20th century.

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