- Manifest Destiny is defined as a 19th century American belief that the spread of the United States across the continent was inevitable.
An example of Manifest Destiny is the belief by President Polk's administration that the U.S. should expand throughout the continent.
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- A policy of imperialistic expansion defended as necessary or benevolent.
- often Manifest Destiny The 19th-century doctrine that the United States had the right and duty to expand throughout the North American continent.
Manifest Destiny - Cultural Definition
A popular slogan of the 1840s. It was used by people who believed that the United States was destined — by God, some said — to expand across North America to the Pacific Ocean. The idea of manifest destiny was used to justify the acquisition of Oregon and large parts of the Southwest, including California. (See Mexican War.)