Sorry Joe, I beg to Differ, The War of Northern Aggression was not only about slavery, but economics. The Northern States were choking the Southern States with tariffs and taxes. I will admit the slavery issue was part of it, but why did the Emancipation Proclaimation only free slaves in the south? It was still allowed in the North until the 13th amendment was enacted. U.S. Grant had slaves even after the war.