During Radical Reconstruction blacks gained rights in the South that would have been unthinkable just decades earlier, and some were elected to office. Radical Reconstruction also saw the South's first publicly funded education system, economic development programs and anti-discrimination laws.
It's D to divide the confederacy, it wa part of the anaconda plan. Step 1, blockade ports to prevent outside help. Step 2, split the south in half at the mississippi river (the battle of vicksburg was to capture a major control point of the mississippi completing step 2). Step 3, march on the capital city.
The answer is Missouri Compromise. I hope this helped!
Sounds like you're talking about the holocaust.