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Civil War
when the Union was thrown into a civil war, westward expansion slowed down between 1861 and 1865. -
Pony Express
mail delivery system that reached from the Midwest all the way to California. -
Homestead Act
gave settlers 160 acres of land after completing a series of steps. act was a government initiative to expand the Frontier by populating the west. -
Sandcreek Massacre
U.S army murder 150 Cheyenne Indians. Because of westward expansion, some pioneers felt the Native Americans were in the way of their settling the state.