It began after the stock market crash of October 1929, which sent Wall Street into a panic and wiped out millions of investors. Over the next several years, consumer spending and investment dropped, causing steep declines in industrial output and employment as failing companies laid off workers.
It is said that the primary blame to the Great Depression was the U.S. and French governments.
The stock market crash of 1929 touched off a chain of events that plunged the United States into its longest, deepest economic crisis of its history. It is far too simplistic to view the stock market crash as the single cause of the Great Depression. A healthy economy can recover from such a contraction.
so pretty much it was mostly that the stock market crashed and people lost a lot of money and their jobs
The main cause, and most important factor of the civil war was slavery. Slavery caused the Civil War because they were being treated unfairly by the South. The North did not like that they were being treated so unfairy. It was a very important factor because the south had been using their slaves to aid the war effort.