Eastern Europe - apex
railroad made it easier to get to seaports in western Europe.
Primarily Irish immigrants from the east cost of the US, and Chinese immigrants from the west. There were other ethnic groups who worked on the railroads, but these were the largest groups.
Railroads made it easier to get to seaports in western Europe.
Railroads made it easier to get to seaports in western Europe.
Railroads made it easier to get to seaports in western Europe.
Railroads made it easier to get to seaports in western Europe.
gold was discovered in California
US railroads mostly.
The Transcontinental Railroad helped to connect the East with the West, increased trade between the East and the West, and helped with the growth of the US.
The railroad.
When they migrated, the building of the railroad provided jobs.