What was a result of investors selling stocks at much lower prices than they bought them, ultimately contributing to the stock market crash?

You think all professors are uncoordinated, but then you see your social psychology professor make a diving catch down the left-field line at an intramural softball game against the arts department team. you also notice that your professor hits lead-off for the team and is able to score from second base on a ground-out. you maintain your original stereotype of professors as uncoordinated by deciding that this one individual is an exception to the rule because he is a “young professor.” this is an example of

Does manufacturing in the midwest affect the nations economy

In which type of economy are these decisions made by the producers , consumers, and the goverment?