The (a)   was the first legislation that restricted an immigrant group from entering the United States.

The Homestead Act allowed Americans to claim 160 acres of land in the (a)   .

Workers could collectively bargain with their employers by joining a (a)   .

John Rockefeller's company, Standard Oil, was a (a)   that controlled the oil refining industry.

The rapid (a)   of America in the late 19th century was due largely to the influx of immigrants looking for employment.

The completion of the (a)   in 1869 economically linked the eastern United States to the western United States.

Under America's (a)   economic system, individuals are largely able to run their own businesses with very little government involvement.

Many robber barons such as Andrew Carnegie and John Rockefeller also practiced (a)   , giving vast sums of money to charitable causes.

There were many (a)   changes in America during the Gilded Age, with increased ethnic and religious diversity due to heavy waves of immigration.