How did mass production most directly affect Americans' standard of
living in the 1920s?

During the 1920s, revolutionary mass-production techniques enabled American workers to produce more goods in less time. Because of this, the economy boomed. The automobile industry played a major role in the boom. Carmaker Henry Ford introduced new methods and ideas that changed the way manufactured goods were made.

c.) biotic: snails; abiotic: temperature climate

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