The Great Depression began after a period of economic growth and optimism in the 1920s. Speculation was rampant and many believed the boom would continue indefinitely. However, on October 29, 1929, the stock market crashed, marking the beginning of a decade long economic decline. GDP was halved, unemployment rose to 25%, farm prices and incomes dropped sharply. Several factors contributed to the depression, including uneven economic growth that did not benefit all sectors, high consumer debt levels, overproduction, and an unstable construction industry. Government policies also exacerbated problems through high tariffs, a regressive tax system, and lax financial regulations. President Hoover's policies failed to stimulate the economy or stabilize international finance. It was not until Roosevelt