How did the United States justify the restriction of Native American life caused by the expansion of its boundaries?

The United States justified the restriction of Native American life caused by the expansion of its boundaries by believing the concept of Manifest Destiny. Because of Manifest Destiny, the U.S. had a “valid” reason to expand, and to decrease the controlled land of the Native Americans.

Explanation: This answer will most likely only be credible if you learned about Manifest Destiny. I’ve been learning this in class, so I know the answer from previous questions that had the same answer. :)

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