Why is siberia much colder than western russia?
ocean winds pound most of siberia.
ocean winds cannot reach siberia.
mountains cover all of siberia.
western russia is much closer to the equator.

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.