Westward Expansion Vocabulary List lode a rich vein of gold or silver transcontinental across a continent from coast to coast boom a sudden demand for something territory areas in the United States that were not yet states and without the government representation and protection that states have Manifest Destiny belief of many Americans in the 1840’s that the United States should own all the land between the Pacific and the Atlantic oceans reservation a limited area of land set aside for Native Americans massacre a general slaughter treaty an agreement made between two parties exodusters blacks who moved west after the Civil War vaquero Spanish word for cowboy sodbuster plains farmer emigrant one who moves within their country to a new location Homestead Act the government offered 160 acres of land for free to anyone who worked the land for five years, (it was an attempt to give poor Easterners a chance to own land in the west) Promontory Point the point at which the Union and the Pacific railroad lines met to create a transcontinental railroad homesteaders farmers who moved to the Great Plains after taking advantage of the Homestead Act Cattle drive Moving cattle hundreds of miles north from Texas to railroad lines Cow towns Cattle held in pens until they could be loaded onto rail cars and shipped to markets in the East Sod house Houses of sod-soil held together by grass roots