How was the demand for labor on the "slave frontier" met?

a.)slaves were imported from europe.

b.)slaves were purchased from the northern states.

c.)slaves were sold in the south by owners in the border states.

During the revolutionary war what was the definition of loyalist

Me and youin the summer of 1804, after meeting native americans for the first time, lewis and clark reached the eastern edge of

Which of these did the soviet union do in 1961? it built a wall through berlin to keep people from moving to the west. it used force to destroy a wall the united states had built in berlin. it convinced the british and french to merge their zones in berlin with the soviet zone. it threatened to bomb berlin if the united states did not leave within 30 days.