During the roaring 20's the rich were partying a lot and having fun basically throwing away money. While the poor weren't happy. They were suffering. World War 1 ended in 1918 so Americans were looking to get back to normal life. A good example for the 1920's would be the book and/or the movie "The Great Gatsby" it shows what the typical urban life was like.
Maybe you should read the book?
1. An article in a news magazine titled " Fences wont stop illegal immigration"
Purpose: to persuade
2. "The iPhone versus the Android ; Which one is best ?'' - an article in a computer magazine
Purpose: to evaluate
3. An article in a newspaper titled " Entire city Installs solar panels on its Homes"
purpose: to inform
4. "Current trends : The Decline of Marriage '' - an article in a popular science magazine
purpose: to analize