I didn't make up this one.
This one was made by a Union supporter on a blog called "Dead Confederates." He created it to demonstrate that the South was an economic backwater and that the vast amount of money to pay the taxes to run the Federal Government came from the North.
I believed his claim until I ran across the fact that the vast bulk of all export money was produced in the South, then I realized the map signified a very different truth than what he wanted it to portray.
I didn't make up this piece of the puzzle either.