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.
Dan Carter, a historian at Emory University, explains how the stock market crash triggered the Great Depression and led to a downward economic spiral of factories and banks closing, job losses, and no money for food, clothing, or any of lifeâs necessities.