Economy of the United States in the 1920s
In 1920, there were 60,000 radios sold. By 1929, it was 10 million. The 20s decade saw the large-scale development and use of automobiles, telephones, films, radio, and electrical appliances in the lives of millions in the United States. Most of Western Europe followed these events, but their economies were so damaged by WWI. It was many years (in effect, the 1960s and 70s) before ordinary people got telephones in their own homes.