What are the social and political consequences of the manifest destine?

Manifest Destiny, the 19th-century belief that the expansion of the United States across the American continents was both justified and inevitable, had profound social and political consequences. It fueled westward expansion, leading to the displacement and suffering of Native American populations and the intensification of debates over slavery in new territories. Politically, it contributed to conflicts such as the Mexican-American War and heightened sectional tensions, ultimately playing a significant role in the lead-up to the Civil War. Socially, it fostered a sense of American exceptionalism but also deepened divisions along racial and cultural lines.