What event triggered the war between the union and the confederacy

What makes ijsselmeer different from other landforms in western europe?

According to jean-jaquees rousseau, individuals participating in a social contact agree to be ruled by

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.