Americans used Manifest Destiny to justify what?
A:a limit on the number of immigrants entering the country
B:a warning to European countries about getting involved in American politics
C:the use of military force to solidify control of the area east of the Appalachian Mountains
D:expanding the territory of the United States to the Pacific Ocean
D: expanding the territory of the United States to the Pacific Ocean
Manifest Destiny was a widely held belief in the United States in the 19th century that its settlers were destined to expand across North America. This ideology was used to rationalize the territorial expansion of the United States from the Atlantic to the Pacific Ocean, including the annexation of lands, the displacement of Native American peoples, and the war with Mexico.