How did the Great Depression start? Here’s a very informative video about the Great Depression that can tell you that and more. It does an excellent job of explaining how the Great Depression came about. It is clear, straightforward, and easy to understand. The video is 7 minutes and 30 seconds long, but you can stop it at 6 minutes if your students start to lose interest. The last minute and a half is basically a silent comparison of Roosevelt and Hoover. It does end a bit abruptly, but overall it explains the start of the Depression very clearly.