The Louisiana Purchase sparked the 19th-century influx of people into the American West, which was propelled by the Gold Rush, the Oregon Trail, and the belief in "manifest destiny."
From the late 18th through the mid-19th centuries, the United States expanded gradually westward.
Most Native Americans who had resided in those territories for thousands of years before European colonists arrived were displaced by this territorial migration.
Thus, Louisiana's belief in manifest destiny."
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