The Great Depression and the subprime mortgage crisis were both major global economic downturns that started in the United States and spread worldwide. The Great Depression began with the stock market crash of 1929, which led to a 30% drop in GDP, a 47% decline in industrial production, and unemployment rising to 25%. It spread through banking panics, monetary contraction, and the international gold standard. The subprime mortgage crisis was caused by a housing bubble, risky lending practices, and the securitization of subprime mortgages. It then spread globally through credit channels, investment flows, trade links, and negative economic expectations. While both involved the gold standard and globalization, the subprime crisis saw governments focus on recapitalizing