The United States marked a new era after the end of World War I. It was an era of hope in which many people invested their money that was under the mattresses at home or in the bank room in the stock market. People migrated to prosperous cities with the hope of finding a better life. In the 1920s, the stock market's reputation did not appear to be a risky investment, until 1929. For the first time in 1925, stock market prices began to rise as more and more people invested their money. During 1925 and 1926, stock prices fluctuated but in 1927 it trended upward. The stock market boom had begun in 1928. The stock market was no longer a long-term investment because the boom changed the way investors thought (“The Stock Market Crash of 1929”). The stock market crash of 1929 was mass hysteria due to people investing without any prior knowledge and the consequences that ultimately led to the Great Depression. During 1928, the stock market was common among all classes of the Roaring Twenties. Ordinary people talked about it and many made millions from the stock market. People watched other people invest their money and thus make greater profits, increasing others' trust in the stock market. Many people had no money to pay the full price of the shares; people bought stocks “on margin,” meaning the buyer would put up some of his own money, but borrow the rest from a broker. Thus, the buyer borrowed about 80-90% of the cost of the shares and only 10-20% of his money (“The Stock Market Crash of 1929”). This way of investing money was very risky. Sometimes, brokers would issue a “margin call.” In this case, the buyer had to return the previously borrowed money. Most ordinary people bought...... half of the sheet...... earch Complete. Network. March 28, 2014. Kennedy, David M., Lizabeth Cohen, Thomas Andrew Bailey, and Thomas Andrew Bailey. The American Pageant: A History of the Republic. 12th ed. Boston: Houghton Mifflin, 2002. Print. Klein, Maury. “The Stock Market Crash of 1929: A Review Article.” Business History Review 75.2 (2001): 325. Academic research completed. Network. March 28, 2014. “Stock Market Crash of 1929.” Stock Market Crash of 1929. Np, nd Web. March 28, 2014. "Stock Prices Plunge $14,000,000,000 in Nationwide Stampede to Unload; Bankers Prop Market Today." New York Times 08 29 1929, n. page Network. March 29, 2014."Chronology." NYSE, New York Stock Exchange About us History 2008 Specialists are transformed into Designated Market Makers (DMMs). Np, nd Web. March 29. 2014. .