The Great Depression was a severe worldwide economic depression in the 1930s. The timing of the Great Depression varied across nations; however, in most countries it started in 1929 and lasted until the late 1930s. It was the longest, deepest, and most widespread depression of the 20th century.
Worldwide GDP fell by 15% from 1929 to 1932. In the 21st century, the Great Depression is commonly used as an example of how far the world's economy can decline.The depression originated in the United States, after the fall in stock prices that began around September 4, 1929, and became worldwide news with the stock market crash of October 29, 1929