D. is the answer became independent
To detect bias you need to the character opinion and then go from there to see how there opinion be comes bias
I am pretty sure the the South was more industrial than the North because in the North they mostly got goods from the South because there in the South is were farmers grew there crops. I hoped this helped you understand even though I couldn’t really explain it well. I learned this in 5th grade so I tried my best to remember what they taught me.
A and C could be the answers according to me