US History:Roaring Twenties and Prohibition From Wikibooks The Roaring Twenties and Prohibition (1920 - 1929) Contents Previous Chapter Next Chapter Contents Radio Movies Prohibition ... edit Automobiles In the 1920s, the United States automobile industry began an extraordinary period of growth. Henry Ford increased the use of the assembly line in manufacturing, thus reducing the time taken to manufacture each product. Also, assembly lines reduced the costs of manufacturing. Average citizens were able to purchase cars, unlike earlier. Due to this increase in the production of cars, industries that produced products utilized in cars also grew; petroleum, steel, and glass companies earned more profits. Also, the states began to build roads and highways in rural areas. Gasoline stations were put up, further increasing the growth of the petroleum industry. In addition, autombile dealers introduced the installment plan, that idea spread to other parts of business. Thus, the automobile industry's growth had repurcussions throughout the nation. edit Radio Radio broadcasting became feasible with the increasing electrification of the United States and the development of better circuitry. The first broadcasting station in the world was KDKA, in Pittsburgh, Pennsylvania, in 1920; other stations started in every state, and in 1924, the first U.S. radio network, the National Broadcasting Company, began operations between New York and Boston. In 1927, the Columbia Broadcasting System began to broadcast. | |
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