Consumers did what to cause the economy to grow in the 1920's?

Consumers spent more on improvised household appliances, automobile, and other goods manufactured through mass production.

Explanation:

The boon that the United States economy receive in 1920's was majorly consumer centric. With the advent of new technologies, the spending habits of people changed as they got attracted towards the new and innovative commodities flooding the market.

Automobile was one such commodity. People, as a sign of dignity, bought cars that were newly being introduced into the market. They also started spending on new and improved domestic appliances as the notion of 'convenience of living' was on fleet during the 1920's.