The Great Depression was a time of economic hardship in the United States during the 1930s when a lot of people had very little money to buy things. It was caused by a combination of things, like banks not keeping enough money in reserve, too much stock trading and stock prices crashing, new businesses failing, and too much debt. It also happened during a time when farmers were not making enough money and people moved away from rural areas and went to cities, looking for work. All of these things added up to create a time in our nation's history where a lot of people were out of work and struggled to make ends meet.