Plzzz help
Directions: Please use four to six sentences to answer the focus question below.
Focus Question: How and why has Civilization changed over time? (Make sure that you use specific examples from the chart above to prove how and why civilization has
changed over time.)

The rise of advertising in the 1920s. i am good with seeing how advertisements shape the roaring twenties and how it developed a new way of life through modern days. but i am not sure what the details of advertising in the 1920s were. if possible can you send me links (preferrably credential links) to sources that maybe show like the first company to start advertising through the radio, how advertising benefits (statistics graphs), etc.