Thesis:A seemingly success cause bad consequence.

　　Subject:The Roaring Twenties

　　Detail:

　　The Roaring Twenties wew a decade charaterized by a seemingly strong economy.”The nation was nearer to the final triumph over poverty than ever before in the history of any land.”as President Hoover stated,However,overproduction and underconsumption contributed to the desperate condition of farmers and unsound stock practice meant that the price of securities had risen far beyond the value benhind them which together lauched America into the Great Depression,a time of high unemployment and prevalent pessimism dominated the country.The fragile economy that masked with a widespread optimism turened the country into a purgatory.