How did the doctrine of Manifest Destiny in the United States affect the development of the country in the 1800s?

Americans wanted to develop the eastern coast of the United States.

Americans encouraged Native Americans to move eastward across the country.

Many Americans moved westward across the continent to settle new territories.

Many Americans moved to European countries looking for work.

The doctrine of Manifest Destiny had a significant impact on the development of the United States in the 1800s. It fueled westward expansion, leading to the acquisition of new territories and the settlement of the American West. This resulted in the displacement and marginalization of Native American populations as well as conflicts with Mexico over land acquisition, ultimately resulting in the Mexican-American War.

The belief in Manifest Destiny also played a role in the push for territorial expansion and the annexation of Texas, Oregon, and California. This expansion helped to shape the boundaries of the United States and increase its territory and resources.

Overall, the doctrine of Manifest Destiny promoted the idea of American exceptionalism and the belief that it was the country's destiny to expand and grow, leading to significant changes in the geography, demographics, and economy of the United States during the 1800s.