The plague of the 1300s was called the Black Death because the disease turned the patients'lungs black.
the first cases happened near the Black Sea.
the bodies of victims turned black after death.
the illness created black spots on the body.

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.