During World War I, the United States created The Committee of Public Information, also known as CPI, it was the first independent agency, in the US history that distributed propaganda (mainly by colorful posters and short audio messages on the theater) that promoted the idea of enlisting to war and of supporting the troops as well as Red Cross programs among the population. The CPI also wanted to censor any counter-propaganda and the way History was taught during those times. The CPI stopped working once the war ended in 1919 and it caused a great impact on how marketing works until now.
During the world war 2, the US began to provide significant military supplies and other assistance to the Allies in September 1940, even though the US did not enter the way until December 1941.
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The main reason why stock bought on margin was considered a risky investment was because "<span>Investors purchased the stocks with little cash down; if the price dropped the investor had to repay the loan," since this meant that they borrowed most of the money from a bank or other lender. </span>