The war quickened the end. Just the upset of the ballance of the institution collasped its foundations. The first seven seceding states could not have sustained slavery for long boardered with a United States, a foriegn nation, that would have very quickly ended slavery without a united opposition to the Republicans. In order for slavery to survive, those slave states needed cooperation from other states to control the slave populations within their boundaries. They did not have the white population to control the numbers of slaves that would have left in mass.