The document summarizes key events and factors related to the onset of the Great Depression in the late 1920s and early 1930s. It describes how Herbert Hoover became president in 1928 on a platform of continuing Republican economic policies. Despite signs of trouble, the stock market crashed in 1929, marking the beginning of the Great Depression. Hoover's response was unable to stop the worsening economy, leading to his defeat in 1932 by Franklin D. Roosevelt.