This is just a tiny nit - but slavery was actually sanctioned at the federal level through the Fugitive Slave Law. This was one of the events that led to the Ci

This is just a tiny nit - but slavery was actually sanctioned at the federal level through the Fugitive Slave Law. This was one of the events that led to the Civil War - since the northern states suddenly had to enforce southern slave laws. Northern states who did not oppose slavery (as long as it was below the mason dixon line) and could coexist with the south suddenly opposed slavery since they were being forced to enforce southern laws.