USA HISTORY

Detailed explanation-1: -Connecting the two American coasts made the economic export of Western resources to Eastern markets easier than ever before. The railroad also facilitated westward expansion, escalating conflicts between Native American tribes and settlers who now had easier access to new territories.

Detailed explanation-2: -A significant push toward the west coast of North America began in the 1810s. It was intensified by the belief in manifest destiny, federally issued Indian removal acts, and economic promise.

Detailed explanation-3: -Receiving millions of acres of public lands from Congress, the railroads were assured land on which to lay the tracks and land to sell, the proceeds of which helped companies finance the construction of their railroads.

Detailed explanation-4: -Just as it opened the markets of the west coast and Asia to the east, it brought products of eastern industry to the growing populace beyond the Mississippi. The railroad ensured a production boom, as industry mined the vast resources of the middle and western continent for use in production.