Discovery of gold in american west

The discovery of gold in California sparked a massive emigration across the continent to the Pacific coast by Americans searching for wealth. This massive migration of people brought Jefferson's dream of a continental American empire to reality, and began to establish the United States as the dominant country in North America. This massive migration also prompted the need to bridge the nation for the purpose of making the trip from one coast to another easier. …

…and never realized their dream, but because of their migration, the nation realized the need to bridge the nation and the country as a whole became wealthier. The constructing of the railroad was probably the single greatest achievement of the mid 1800's, and the most significant thing to come out of the gold rush. Because of the railroad the nations interior began to open up to settlement and communications between the two coasts became easier.