It influenced the United States because the philosophy.
Explanation:
It 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. It also affected the US because the idea drove expansion, annexation and active movement towards the west. It also meant a constant struggle with Native Americans who inhabited the land.
