One was in the North, which did not like slavery, and wanted it abolished
the other was the heartland of the Confederacy, and fought for the right to own slaves
It was caused by the sharp rise in the price of opium was seized upon by some of the Cohong trading houses and smugglers.
Germany was divided into four temporary occupation zones to berlin, french and British, and American sector and soviet sector.
Austria-hungary seperated as a result of treaty of versailles that ended ww1 it also forced austria proper had to be given up.
hope this helps