/Identify Popular Sovereignty, Kansas-Nebraska Act, David Atchinson, John Brown and Bleeding Kansas. Explain how these terms relate to each other.

Known as the Kansas-Nebraska Act, the controversial bill raised the possibility that slavery could be extended into territories where it had once been banned. ... Its passage intensified the bitter debate over slavery in the United States, which would later explode into the Civil War.

Explanation:

everything is here

A. The treaty gave Spain exclusive access to the Americas.

Explanation: Witht he Treaty, the Pope created the Line of Demarcation giving everything on the west to Spain and giving everything to the east to Portugal.