Cnidaria is a phylum within Kingdom Animalia which consists of hydras, jellies (or jellyfish), sea anemones, and corals. All cnidarians are radially symmetrical, and there are two main radially symmetrical body types.
The stock market crash, on black Tuesday (October 29, 1929) began the Great Depression.
President Roosevelt signs the Declaration of War against Japan, December 1941. October 29, 1929, was a dark day in history. Black Tuesday is the day that the stock market crashed, officially setting off the Great Depression. Unemployment skyrocketed--a quarter of the workforce was without jobs by 1933 and many people became homeless. President Herbert Hoover attempted to handle the crisis but he was unable to improve the situation. In 1932, Franklin Delano Roosevelt was elected president and he promised a New Deal for the American people. Congress created The Works Progress Administration (WPA) which offered work relief for thousands of people.The end to the Great Depression came about in 1941 with America's entry into World War II.