They were there against the civil right worker's murders. While the black population at the time was allowed to vote, in the Southern states they were withheld from voting by all sorts of idiotic reasons.
I believe the answer would be C, 58.
The correct answer is A) Did the rebellious states ever become a separate nation.
Reconstruction is the era after the American Civil War. Considering the Confederacy's loss in the Civil War, the question became how would these rebellious states be received by the Union. In order to determine this process, the issue of whether or not the rebellious states were ever an independent nation cause significant problems. If these states were considered part of an independent sovereign nation, they would have to apply for statehood, get a state approved constitution, etc.
In the North cold made farming difficult while in the South climate was ideal for agriculture.
Immigration created a huge population increase in the North while 1/3 of the southerners were slaves. Cities in the north developed as centers of trade whereas most southerners lived on farms.
The economy in the North was based on manufacturing differing from the agricultural South.
But the most significant development was transportation. Canals had been built and most of the railroads were in the North. However, the south still depended on steamships.
Homo Erectus. I hope this helps. :)