Farming/ slavery.
This answer really depends on what the question is asking, the southern economy banked heavily off of farming, BUT it was impossible to provide and have such an abundance of crops without slavery. So, it depends on the options you have.
Hope this helps, man!
Christopher Columbus was a villain because he killed and enslaved natives
The Hatian revolution was in response to being held as slaves, and they have had enough.
The Sepoy revolution was in response to several factors.
The Sepoy's were using pig fat for their bullets.
The Sepoy's were not getting paid as soldiers.
The Sepoy's were treated as inferior to English.