How did the car industry help other industries?
Stimulated economic growth, and the introduction of assembly lines
Examples included steel, rubber, oil, glass and leather. Construction industry was needed to build new roads
Other consumer goods became more affordable, e.g radios, telephones, fridges, vacuum cleaners, washing machines and ovens. (this gave house-wives a lot more free time)
Wages for industrial workers grew by 26% during the 1920s, unemployment dropped vastly