Please help I need it now What was a major factor that caused the Great Depression?

1. a decline in crop production by American farmers
2.high wages paid by employers
3.increases in the tax rate for corporations
4.speculators borrowed money to buy shares of stocks

4. Speculators borrowed money to buy shares of stocks

Explanation:

A big problem in 1929 was that investors borrowed too much money to invest in the stock market, believing that the stock market would keep on rising and never decline. ... When the market did decline, creditors wanted their money back, but financially ailing investors were over-leveraged, and couldn't repay their loans.

affirmative action refers to the policies that take gender, race, or ethnicity into account in order to promote equal opportunity.

employers subject to title vii are prohibited from taking race or sex into account in any employment decisions. aa is a penalty for having any job group substantially statistically "underutilized" in any race or either sex. the employer must take steps to eliminate the underutilization, then stop, ending its aa efforts