American expansion westward refers to the movement of settlers and the annexation of new territories by the United States towards the western frontier during the 19th century. It was driven by various factors including economic opportunities, manifest destiny ideology, and population growth.
Related terms
Manifest Destiny: A belief prevalent in the 19th century that it was America's destiny to expand its territory from coast to coast.
Homestead Act: A law enacted in 1862 that allowed individuals to claim up to 160 acres of public land in exchange for improving it through cultivation or building.
Oregon Trail: A famous pioneer route used during westward expansion that stretched from Missouri to Oregon, allowing settlers to migrate across difficult terrains.