What is the manifest destiny and how did it affect u. s. expansion?

Manifest Destiny, a phrase coined in 1845, expressed the philosophy that drove 19th-century U.S. territorial expansion. Manifest Destiny held that the United States was destined—by God, its advocates believed—to expand its dominion and spread democracy and capitalism across the entire North American continent.

And here is a good link describing/ sumamrizing it: https://www.history.com/topics/westward-expansion/manifest-destiny

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the law supported victims of political persecution.

explanation: