Economic Boom!! Disgaree or Agree?! :D

One historian said: "Without the new automobile industry, the prosperity of the 1920's would scarcely have been possible." 
Explain whether you agree or disagree with the statement. Support your explanation by referring to the Sources and information.

I agree with the statement to an extent because during the time of the economic boom the new ideas and industries really set a base for the time of the 1920's and really helped the U.S. develop. With the idea of building cars, industries took off and grew into something larger. Also with making cars it helped the U.S. explore new resources such as: steel, chemicals, glass, and machinery. This later became a foundation for an economic boom in consumer goods. The tariff made it so importing goods was more expensive, so if the U.S. was to sell cars they'd make money from other foreign countries. Also, for the 1920's up until 1929 the world industrial production and the U.S. industrial production went up, so it shows how this really helped the U.S. and the prosperity of the 1920's.