A Sargent and supreme leader
In my research I have found that the answer is D, here's why.
Sectionalism is to pay more attention to the politics in the area local to where you reside rather than paying attention to politics on a federal level (unless of course you live in the country capital.) Federalism is the exact opposite.
The correct answer is C. Taking the right to vote and hold office from former confederate leaders.
Reconstruction period was termed as the era in the history of America. Reconstruction period had two applications which included American civil war and ex-confederate states where congress was the director.
The era of reconstruction ended slavery and also ended national remnants of confederate. There were civil war memory visions which appeared on this period. They include, vision for emancipationist, vision for white supremacist, nd vision for reconciliationist.
Well Eli Whitney invented the Cotton-gin. Which changed the economy in the south but the device made little money. Also slaves have a big part too because at the time they were traded throughout the triangular trade of Europe Africa and America