D. Franklin Roosevelt
Hoover was before but he was president during the great depression and the other two were after F. Roosevelt
People's believes and feelings about government vary dramatically, especially in democracies where people's voices can be heard the "loudest". Many people are content with the status quo, while others fight their whole lives to change it.
Answer: It changed both the economy and the American Slavery
Explanation:
So instead of slaves having to separate the cotton from the seeds, they used the cotton gin which increased production and profit