The automobile was technologically possible in the 19th century, but it took Henry Ford to make the practical device widely available to Americans.
The industries and businesses required to supply the raw materials for the manufacture of automobiles expanded in support of the sector. Automobile sales increased from 5 million in 1920 to 26 million in 1929, and this boom was supported by a massive increase in the production of steel, plastics, rubber, and glass.
The 1920s were a decade of unheard-of affluence for many middle-class Americans. As incomes increased, there was more money available for the purchase of consumer items. Henry Ford's improvements in assembly-line productivity led to the development of a really affordable car, opening up the potential of car ownership for more Americans.
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