Westward Expansion, a defining chapter in American history, was the 19th-century movement of settlers, entrepreneurs, and immigrants across the North American continent. Westward Expansion was a complex and transformative era that reshaped the United States geographically, economically, and socially. While it brought economic growth and the realization of national ambitions, it also left a legacy of profound injustice and conflict that continues to influence the American narrative today.