The development of the railroads during the 1800s dramatically changed life in America in many ways. In which of the following ways did the railroads change life in America?

Railroads connected the coasts and greatly improved the efficiency of the American economy. Shipments could now happen within days instead of months that it might take to bring supplies on wagon trains from the East to the West. While it did mean the end of the Long Range and the era of great importance of cowboys, the railroads also allowed the Midwest to be settled.