Manifest Destiny was the belief that Americans had the duty to expand westward and conquer the land between the Atlantic and Pacific Oceans in the 19th century.
Manifest Destiny was the belief held in the 19th century that it was the destiny and duty of Americans to expand westward and conquer all the land between the Atlantic and Pacific Oceans. This concept was rooted in the idea of spreading democratic institutions and asserting political and economic control over the continent. It also involved the Americanization of the inhabitants of the newly acquired territories through cultural assimilation.
https://brainly.com/question/37637374