After World War 1 the U.S. has a booming economy and the youth will push for cultural changes. This will all end with the Black Friday and the Great Depression. Be sure to read the lessons in the online textbook (You'll see "Table of Contents" in the toolbar on the top menu bar of the course page, which will open up a list of all the modules on the left hand side of the screen) before completing the assignments or attending a live lesson for credit.