What are four factors that influenced the westward movement?

Four key factors that influenced the westward movement in the United States include the promise of economic opportunity, such as land ownership and resources; the concept of Manifest Destiny, which held that it was America's destiny to expand across the continent; technological advancements like the railroad and telegraph, which improved transportation and communication; and the availability of government incentives, such as the Homestead Act, which encouraged settlement in the west. Together, these elements propelled many Americans to migrate westward in search of a better life.