Question

What effect did this territorial expansion have on the United States?

Answer 1

Answer:

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.

Answer 2

Answer:

manifest destiny

Explanation:

the 19th-century doctrine or belief that the expansion of the US throughout the American continents was both justified and inevitable