How did the growth of the railroads affect supply and demand for natural resources in the United States?
The growth of the railroads decreased the supply of natural resources.
The growth of the railroads decreased the demand for natural resources.
The growth of the railroads increased the demand for natural resources.
The growth of the railroads had no effect on the supply of natural resources.rs.
to escape a potato famine.
to live in less crowded conditions.
to escape oppression.