Which option provides an accurate and objective summary of the article? The 1920s brought significant changes to the American consumer economy, largely due to new inventions, an increase in the use of credit and new forms of advertising. The 1920s brought significant changes to the American consumer economy for the wealthy, but did not offer significant differences for middle-class and poor consumers. The American consumer economy in the 1920s was significantly changed by new inventions and forms of advertising. These led to more free time for women and less difficult work. The American consumer economy in the 1920s was significantly changed by the radio, which was used to advertise new inventions, as well as to share news, sports scores and music.