Explain the spirit and meaning of the Manifest Destiny that inspired American expansionism in the 1840s.

The Manifest Destiny was a phrase coined in 1845. It expressed the spirit and meaning that United States was destined by God and by its history, to expand its dominion and spread democracy and capitalism across the entire North American continent so as to get as much land as possible. As a result, millions of Americans began to migrate westward in search of new lands as well as opportunities.