I think C is the right answer
I say A) Economic Decline
It was determined from chemical analysis and observations by the EPA in the 1970's that the Love Canal in New York is considered to have "contaminated with toxic chemicals." Due to these, the canal was furthermore restricted to any human activities taking place due to the hazards it would produce.
During the second battle of bull run,<span> Pope's Union forces tried to commit an invasion to the Southern capital of Richmond failed the operation and were defeated. Soon after their defeat, Pope's scattered Union troops clashed many times with Southern forces led by Major General "Stonewall" Jackson. This is his contribution to history -</span> he successfully <span>outmaneuvered and </span><span>nearly destroyed Union force.</span>