What new technologies were used in the Civil War?

In what primary way did the goals for us intervention in europe differ from those of the soviet union

The north was victorious in the battle of bull run true or false

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.