Agriculture is by far the single most important economic activity in Africa. It provides employment for about two-thirds of the continent's working population and for each country contributes an average of 30 to 60 percent of gross domestic product and about 30 percent of the value of exports.
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If I remember correctly it was #2. The radical republicans wanted to punish confederate leaders so #3 is wrong. They did not want white southern representation in congress so #4 is wrong. And the democrats wanted to prevent freed slaves from owning land. Hope this helps!
Hope my answer helped you
A the civil war is the answer
After the stock market crash, there was a recession in the economy because people weren't buying goods or spending money.