American imperialism in the late nineteenth century was justified as a broadening of what earlier American principle?

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American imperialism in the late nineteenth century was justified through the principle of manifest destiny. Manifest destiny was an idea that the United States was meant to expand its territory and spread its ideals throughout North America. This idea helped to justify westward expansion throughout the 19th century and was extended to justify the acquisition of overseas territories, such as Hawaii and the Philippines.

American Imperialism in the Late Nineteenth Century Was Justified as a Broadening