by Vernon R. Padgett, Ph.D.
We like simplicity. "The War was Fought Over Slavery," or The North Fought to Free The Slaves," is simple, as simple as a Pepsi commercial. For a society raised on Pepsi commercials, the One Factor theory (slavery) has enormous appeal.
We like to believe that Good Guys Win in the end. Since the blue uniforms won, then what they fought for must have been the right thing. We won all our other wars, except a few that we don't talk about, and we were the good guys in all those wars. (World War I is still hard to figure out—whatever did we get into that for?-- that's another essay.)
Read more here
http://www.rebelgray.com/slavery02.htm