An important feature of consumer in the 1920s was that manufacturers ?

Answer: An important feature of consumer behavior in the 1920s was that manufacturers began to focus extensively on advertising and consumer credit to sell their products. During this era, known as the "Roaring Twenties" in the United States, mass production techniques improved vastly, enabling manufacturers to produce large quantities of goods. To ensure that these goods were sold, companies turned to new and more aggressive marketing strategies. This included the use of psychology in advertising to appeal to people's desires and emotions, rather than just their needs, and to convince them that buying certain products would enhance their lives.

Additionally, the introduction and expansion of consumer credit allowed more people to purchase goods even if they did not have the cash upfront. Installment plans and credit systems enabled individuals to buy expensive items, such as cars and refrigerators, by paying a small amount monthly. This trend towards consumerism was a marked change from prior periods, where less emphasis was put on the acquisition of goods beyond basic necessities.