Answer:
3. Expands the U.S. from the Atlantic ocean to the Pacific ocean
Explanation:
In the 1800s, many hoped for a better life farther west. Exciting images persuaded people to make the tough journey. The painting “American Progress” is one example. It supports the idea of Manifest Destiny, a phrase first written in 1845 by journalist John L. O’Sullivan. O’Sullivan believed that God wanted Americans to expand their nation to the Pacific Ocean. Manifest Destiny means Obvious Purpose. Even though O'Sullivan wrote Manifest Destiny, the idea was already in existence.
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I’m not 100% sure but I think the answer your looking for is that they gained more than 500,000 square miles of land
Slave traders violently captured Africans and loaded them onto slave ships, where for months these individuals endured the “Middle Passage”—the crossing of the Atlantic from Africa to the North American colonies or West Indies. Many Africans did not survive the journey.
