Answer:
People benefit from Doctors and people benefit from the police.
Explanation:
We need these people so we can live.
Answer: b.) glaciation led to the development of Louisiana's extensive system of bayous and swamps.
Explanation: This seems like the best answer choice so I think it is B.
The advantage the north has is A-it had more industries, as the union could build guns, ships cannons at a faster and better rate than the south. The other answers just don't make sense as the south grew the most cotton, they both had experienced commanders, and the weather didn't have much effect. I hope this helps!