Why did a consumer economy develop in the 1920s?

There was a greater availability of consumer goods.

American families were frugal.

Americans made everything they needed at home.

Americans could pay on the installment plan.

Americans could pay on the installment plan.

Explanation:

After the period of Depression in the Economy there was prosperity in the 1920s that led to new patterns of consumption or purchasing consumer goods like radios, cars, tools, beauty products and clothing.

The expansion of credit in the 1920s allowed for the sale of more consumer goods and put automobiles within reach of average Americans. This made Americans could pay on the installment plan.

yes, since there is a positive and a negetive if the positive and negitive wasn't there wouldn't a flow electricity in it.

i am pretty sure it is d.