The Great Crash of 1929 marked the end of the prosperous Roaring Twenties era in the United States. Few sensed the looming economic troubles caused by overproduction and excessive credit. The stock market crash in October 1929 was partially triggered by foreign investors and led to widespread panic. As the depression took hold over the next few years, unemployment skyrocketed to over 4 million by 1930 and over 12 million by 1932 as businesses closed and banks collapsed. Families struggled as breadwinners lost their jobs and savings through no fault of their own.