USA HISTORY

Detailed explanation-1: -Land symbolized opportunity to generations of Americans, starting with colonists who never had the chance of owning property in Europe; the vast continent gleamed in their eyes and its frontier drew them west.

Detailed explanation-2: -Faster travel to the West by railroad; availability of supplies due to the railroad. The opportunity to own land cheaply under the Homestead Act.

Detailed explanation-3: -The expansion of the United States to the west affected the way the democratic Union was organized. The Americans who moved west organized themselves into territories and when the population of a particular territory crossed 60, 000, they petitioned to become part of the Union.

Detailed explanation-4: -The three reasons the US expanded overseas was for economical power in overseas markets, to civilized non white nations like the Europeans did during the birth of America, and because the frontier was closed and Americans wanted to expand their influence.