The correct answer is "The introduction of railroads enabled a national market for goods and led to the creation of time zones."
The change that railroads brought to American society during the GildedAge was: "The introduction of railroads enabled a national market for goods and led to the creation of time zones.
Railroads changed the life of the American people. Railroads transformed people's transportation and goods transportation during those years. The construction of teh Transcontinental Railroad connected the East Coast with the Pacific Coast, benefiting trade and communications.
It was American writer Mark Twain who used the term Gilded Age in his novel "The Gilded Age: A Tale of Today," written in 1873. During this era, the creation of monopolies made some people very rich in America, as was the case of John D- Rockefeller with his Standard Oil Company or Andrew Carnegie with his Steel company bought almost all of their competitors to have the monopoly of oil and steel n the United States.
