Question

When did activities occur that demonstrate Americans' belief in Manifest Destiny?

Answer 1

The activities that demonstrate American's belief in Manifest Destiny happened in the 19th century. The term "manifest destiny" originated in the 1840s. It was the widely held belief that the US expansion was justifiable and inevitable.

Answer 2

1783, expansion of American territory via the Treaty of Paris; 1803, the Louisiana Purchase; 1845, Texas annexation; 1848 Mexican cession