The history of railroads in the United States date back to the mid-1820's; our nation would not have grown and prospered as it did without the railroads, which ultimately connected the country together, allowing for the expansion of industry, and moving people and goods in mass numbers. The period from 1880 to the early 1920's is commonly known as the "Golden Age" of railroading. During World War II railroads played an important role in moving military equipment and soldiers from one part of the country to the other. During the post-war era many railroads revamped their passenger trains with new streamlined equipment; however, during the 1960's railroads began to suffer financially as the airline industry and the interstate system came of age. Today, the railroad industry is experiencing a renaissance as more goods and the traveling public move by the ribbons of rail crisscrossing the country. Along with the growth of the industry there are many organizations dedicated to the preservation of railroad equipment and the history of the iron horse.