Lies and leftist propaganda.  The country was 
NOT founded on slavery.  A very small portion of the population were slaves that were sold to Arab slave traders for a few trinkets and used all over the world, not just here.  The Civil war was about territory and resources like many wars.  Slavery was a by-product of that war.  Slavery was invented in Africa. More slavery goes on around the world today than the miniscule numbers here 100's of years ago.  Why don't you come up with a new leftist issue?