<span>three most severe downturns in the United States economy since the 1920s were:
- The depression of 1921, happened because we receive a blowback for all the money we spent on world war I
- The Great Depression of 1929-1933 , happened because our investment to expand our business to all over the world
- The Great Recession of 2007, happen because of the mortgage crisis, causing Global financial crisis</span>
George McGovern was the opponent of President Nixon. While Jimmy Carter was the one that promised not to lie to Americans.
<h3>Who was George McGovern?</h3>
This man was the democratic party representative in the 1972 election. He was also a historian and a politician from South Dakota.
Jimmy Carter was not just a nominee he became the president of the United States.
Read more on elections here:brainly.com/question/13474496
It would be John C Fremont. However he didn't win the whole election, the Democrat he was running against did.
