It was "Mitchell Palmer" who was the attorney general under President Wilson who led a witch-hunt to round up communists in the 1920s, since these were known as the "Palmer Raids".
I suggest you to go with first one a. there was heavy damage only within a mile of the bomb's impact. There're no closer description than that.
After the Civil War (1861-1865), the land was divided into small parcels and started to be rented or sharecropped. At that time slavery was condemned, so former slaves became those sharecroppers who rented the land of plantations in order to stand for a living by producing and sharing the crops. The owners or the new sharecropped demolished slaves’ old housing and built new ones near the main house. Besides, owners had to start paying taxes in cash which produced an impoverishment of plantations.
The correct answer is increasing sectionalism.
During the early to mid 19th century, the American economy was developing in very different ways. For example, the Northern states were becoming more industrialized and focused significantly on the production of manufactured goods. On the other hand, Southern states still relied heavily on slave labor to grow cash crops (especially cotton). This was vastly different than the North, as slavery had been outlawed in many of these states.
The issue of slavery, it's existence, and its extension into new territories in the west caused significant problems between Northern and Southern states. This was especially true when Northern and Southern politicians meet in Congress to discuss these issues.