What impact did railroads have on the United States as a result of the Second Industrial Revolution? [Select all that apply.] What impact did railroads have on the United States as a result of the Second Industrial Revolution? [Select all that apply.] They connected areas of the country that had previously had little interaction with one another. Goods and supplies could now be easily and cheaply transported across the country in massive quantities. They made big business possible. The efficient transportation system drove down the prices of goods while increasing the amount sold