What did stephen douglas's doctrine of popular sovereignty state?

Stephen Douglas’s Sovereignty Doctrine believes that the people living within the state should decide whether to allow slavery in their area or not.  However the Bleeding Kansas was an example of volatile the issue of slavery was as many were hurt during that incident.

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.

the real answer is b