A the civil war is the answer
Beyond abolishing slavery in the United States, the Civil War was a pivotal event in American history because it reshaped the political landscape and forced the South to develop an entirely new economy.<span />
There were multiple spaces where three multiple skeletons have been uncovered in a single grave in the past. When we find mass graves of skeletons from the past, this means we've likely found a place where people have been killed.
The answer would be C.
The Compromise of 1877, settled the intensely disputed 1876 presidential election. It resulted in the United States federal government pulling the last troops out of the South, and formally ending the Reconstruction Era.
They traded or killed animals