The correct answer to this open question is the following.
In the 1920s, people used installment plans to buy consumer goods such as household appliances.
Let's remember that in this decade, the United States economy allowed people to buy many things, most of them on credit. That is why this period was known as "the Roaring 1920s." People paid their goods in monthly payments. Everything changed on October 29, 1929, when the US stock market crashed. This represented the beginning of the Great Depression.