The New York subway was a turning point in history because it revolutionized the ways of transportation in New York and other major U.S. cities.
facts on subways
The New York subway was, and is, very essential to transportation in New York City. The subway made other large cities in America, Chicago, for example, has a "subway" similar to New York's but it is above ground rather than New York's underground. The first subway in the world was in London, England. Other subways have been put in Germany, China, Japan, and many more highly-populated cities all over the world. London's Subway is the oldest, and longest subway in the world.