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.
Introduction. The Great Depression of the 1930s was a global event that derived in part from events in the United States and U.S. financial policies. As it lingered through the decade, it influenced U.S. foreign policies in such a way that the United States Government became even more isolationist. Dorothea Langeâs Migrant Mother. The origins of the Great Depression were complicated and have been much debated among scholars. The initial factor was the First World War, which upset international balances of power and caused a dramatic shock to the global financial system.