Look at the map of cities in the United States at the turn of the twentieth century. A map of the United notes showing the industrial centers of the country at the end of the nineteenth century shaded green. Some cities labeled within these green sections are Boston, New York, Pittsburgh, Cleveland, Birmingham, Saint Paul, Saint Louis, Kansas City, Denver, and San Francisco.

What impact did railroads have on cities across the United States at the turn of the twentieth century?
Many cities became industrial centers.
Many cities saw a decrease in population.
Many cities became agriculture centers.
The railroads had minimal impact on cities across the United States.

Many cities became industrial centers.

Explanation:

The railroad was incredibly important for the development of industry in the United States.

This is simply because the railroad as means of transportation, allowed industrial goods to be shipped and distributed more quickly and effectively.

Because industry tends to cluster around the cities, railroards were built to connect several cities, especially in the Northeast and the Great Lakes, and these cities became industrial centers very quickly, during the second half of the nineteenth century.

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