Using the sources in Packet #2, explain the uses of advertising during three periods of conflict in the United States: the American Revolution, the Civil War, and World War I. How did the ads reflect larger themes in American society? Why did advertisers use these techniques? What does this tell us about the role of consumers during wartime?This essay requires you to explain why advertising changed over time or why it took the forms it did. Don’t just describe change; explain why it occurred. You must make an argument and support it with analysis of primary and secondary sources. You must ground your argument in historical context. Once you have gathered your documentary evidence, take a look at the essay by Susan Strasser on the development of modern advertising on the ELMS/Canvas course site. This background essay will help you shape your own argument.