The Great Depression In the movie, The Grapes of Wrath, one of the biggest problems in the movie is the fact that the great depression is in its prime. The great depression is the main cause and the sound basis for the movie. When you think about it after watching the movie, all of the events in the movie happened because of the great depression. The only reason that all of these people were moving out west was because they had no work. They were not making enough money to feed their families. I could not really tell you whether or not the Joad family had it the worst back then (saying that this really happened). It was probably