Summarize how advertising changed in the 1920s

What do states primarily use their reserved powers to regulate? a. services related to national citizenship b. issues that affect day-to-day life for state residents c. issues involving taxation d. issues that affect states' interaction with the federal government

What is the main idea of this excerpt? 1.1.3

The car market is an example of because it has few sellers who offer differentiated products. a.oligopoly b.monopoly c.monopolistic competition