Germany was sinking American merchant ships.
Herbert Hoover was a commerce secretary before running for president. This way he was aware of the US Economy as a whole. Based on this experience he developed a singular view of what should be the American Society. He thought that America should be more efficient if eradicated waste and created a better business cycle. In order to do this, according to his ideas, business leaders could be working together with the government (although without interference from the White House) and with experts in Social Sciences in order to improve Economy and made it healthier.
With all those efforts, he thought that America could finally improve what he called the main component of the American experience: The individualism, his superior principle in wich society should gather to organize itself.
Banks assumed the economic boom of the 1920s would go on forever. ... By October 1929, the various economic problems in the United States collided and caused<span> a massive slide in the U.S. </span>stock market<span>. The slide signaled the start of the </span>Great Depression<span>.</span>
The main reason why <span>Truman wasn't expected to win the 1948 election was because he had been a very uncharismatic and somewhat un-liked president under FDR. </span>