PLEASE HELP!! Was imperialism a legitimate policy for the United States to follow at the turn of the 19th century?

Imperialism is a policy of extending a country's power and influence by utilizing diplomacy or military force. At the turn of the 19th century imperialism was not a proper and legitimate policy for the United States to follow because it was militarily, politically, and socially problematic.

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true. the definition explains it: a word or phrase that modifies or qualifies an adjective, verb, or other adverb or a word group, expressing a relation of place, time, circumstance, manner, cause, degree, etc. this is a dictionary definition that i have looked up in a dictionary.