If Jackson had lived, you would be reading a much different story.....He would have whupped some major Yankee *ss......
While Jackson's greatness as a general is not disputed, he was up against the B-team during his day not the great generals earning their spurs in the West. Sherman and Grant would have given him all he wanted and more.
The best that could have happened would have been a draw at Gettysburg with the South divided and a strengthening Union army in its heartland. There was no way of supplying the Slaver's Suckers anymore. Europe wanted nothing to do with those losers either. However, if the North had more completely removed the old ruling class then the subsequent history would have been much better without the rise of anti-Freedman Terrorism and the entrenchment of racism as a tool against them.
Another hundred thousand or more deaths could have occurred had he lived but without the Northern RAT Traitors winning the election Jackson would have been no more than a big pain.
The Union was led by a man of genius easily comparable to the greatest who ever lived while the mediocrities of the Slavers were nothings who disappeared without a trace from history's stage.