The correct answer to this open question is the following
The Great Depression started on October 29, 1929.
After a period where American people spend money mostly using credit and investing in the US stock market in the 1920s, in a time called the "Roaring 1920s," things began to change. The US stock market crashed on October 29, 1929, and it represented the beginning of the Great Depression, one of the most terrible economic crisis that the United has lived. Many people lost their jobs, several companies had to close, and many banks went into bankruptcy.
