Select the correct answer. Why did the Warsaw Pact dissolve in 1991? A. The Cold War had ended, so the Soviet Union and the United States no longer needed to manufacture nuclear weapon: B. The Soviet Union had fallen, so it no longer needed to govern its federated states. C. The Berlin Wall had been brought down so the pact would no longer keep Germany divided D. The countries of the Communist Bloc had separated from the Soviet Union, so they no longer took part in the pact. E. The Cold War had ended, so the United States and its allies were no longer dependent on one another for military aid