Yes, the value system was the same Binnie, but people change...and countries evolve. The North descended from the Mayflower just like the South did, but they evolved.

I would even go so far as to say that the South may have shared all but one value in common with the original 13 colonies (half located in the North East btw), and that was the South's willingness to break up the Union to make a point. One of the main values of the original founders was the importance of maintaining the Union.

Now we all here might disagree on what that point was, whether it was the right to hold onto their enslaved captives, or something else.