In 1920 it was revealed that for the first time the majority of americans lived in

Towns and cities.

Explanation:

The economic growth of the United States of America was reaching new heights in the 1920s. Real wages for workers increased, the stock market grew considerably, modern culture developed in towns and cities. According to the U.S Census of the 1920s, for the first time, the majority of Americans lived in towns and cities which is the result of the fast-pace growing economy of the United States.

answer; sociological imagination;