Pls help if u do u get brainliest and answers just for points will be reported

Answer:
B
Explanation:
I think B because slaves was a really big thing before the Civil War, and I feel like the majority of the population back then was mainly made up of slaves. And also slaves were the ones working on plantations. Also the soil was really good there back then which was mainly used to grow Cotton I think. If you find any fault in my answer let me know. Thanks. Have a good day!