During the twenties, America experienced extreme development and urbanization. Many new inventions and innovations were made. Such as, steel, oil, and the assembly line along with many other inventions and innovations. Technology played a big role in World War I and continued to develop afterwards. It could be argued that steel and oil made America the way it is today.
Steel was a very important aspect to the growth of America.Steel was needed to build modern cities, especially skyscrapers. In 1872 Andrew Carnegie traveled to England to learn a new technique for making steel. Carnegie wanted to make steel affordable. Andrew Carnegie builds the largest steel plant in the world, in Pittsburgh,