Question

The belief that the United States should extend from the Atlantic Ocean to the

Answer 1

Answer:

The doctrine was called the  Manifest Destiny.

Explanation:

Answer 2

Answer:

Manifest Destiny

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Explanation:

During the 1840s, this expansionist spirit gained more and more support. People who promoted the idea of expansion believed the "Manifest Destiny" of the United States was to extend its boundaries.