The best choice would be D.
There exists the same question from other source with the following choices:
<span>A: Many southerners depended too heavily on industry.
B: After the civil war, many southerners struggles financially.
C: The civil war and reconstruction had little effect on the south.
D: Southerners needed to focus more on cotton production
The correct answer to this question is letter "</span>A: Many southerners depended too heavily on industry."
<span>True, Children worked as much as 10 to 12 hours a day in dangerous factories during the Industrial Revolution</span>
Answer:
The area on the map is three