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!
Answer:
changes in satistics describing grain size distributions long been used to sediment transport
I believe the answer is c.
Answer:
David was 30yrs old when he became King and ruled for 40 years
Explanation: