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.
Economists still cannot agree on what caused the Great Depression. Most however have agreed that it was a combination of events and decisions that came into play that caused the Great Depression. Stock Market Crash of 1929. The Wall Street Crash of 1929, is cited as the case of the Great Depression.However, while it does share some of the blame the crash ruined peopleâs fortunes and destroyed confidence in the economy. However, most believe that the crash alone would not have caused the Depression.hile not a direct cause of the Great Depression, the drought that occurred in the Mississippi Valley in 1930 was of such proportions that many could not even pay their taxes or other debts and had to sell their farms for no profit to themselves. This was the topic of John Steinbeck's The Grapes of Wrath.