Which two countries occupied the land that the United States needed to acquire in the 1800s in order to achieve Manifest Destiny?

Manifest Destiny, a phrase coined in 1845, is the idea that the United States is destined—by God, its advocates believed—to expand its dominion and spread democracy and capitalism across the entire North American continent. The philosophy drove 19th-century U.S. territorial expansion and was used to justify the forced removal of Native Americans and other groups from their homes. The rapid expansion of the United States intensified the issue of slavery as new states were added to the Union, leading to the outbreak of the Civil War.

Hope this helped. Maybe brainliest??

to fight against injustice and class division

the correct answer is b, "fertility rates are increasing, so populations will grow more quickly in the future."