During the 1920s, more Americans than ever had access to radios, telephones, electricity, and indoor plumbing.
The 1920s were a period of prosperity for the United States. It was in this era where the use of the telephone, the automobile and the household appliances became popular. These devices were too expensive, and that's when the installment sale was applied for the first time. This created a consumer wave, since people could buy the products without having to have the cash at first. The diffusion of the radio as a mean of mass communication was also popular, as it was an economic device available to the entire population.
