Manifest Destiny and Regional Divisions

In the early to mid-19th century, Manifest Destiny played a crucial role in shaping U.S. policies and attitudes toward territorial expansion. This ideology not only justified the annexation of vast territories but also influenced the nation's treatment of indigenous populations and relations with foreign powers. To what extent did Manifest Destiny act as a unifying force for American society during this period? Consider how this ideology affected social, political, and economic dynamics across the United States.