The document provides details about the Great Depression that occurred from 1929 to the late 1930s. It describes how the stock market crash of 1929 led to widespread bank failures as people withdrew their deposits. This caused many businesses to cut wages or lay off workers, resulting in high unemployment. Some key effects included a 30% drop in GDP, mass unemployment, reduced industrial production and exports, and social impacts such as migration within the US. The Depression affected other countries globally due to reduced international trade and their dependence on exporting to the US and other nations.