Answer:
b. Correct frequency
Explanation:
Frequency theory applies to sounds at low frequencies whereas high-frequency sounds are accounted to the Place theory.
Although nethier the U.S nor the Soviet Union had an overt participation in the Chinese Civil War, it is often said that this event represents the beginning of the Cold War in Asia. The confrontation between the nationalists and communists and the further establishment of the People's Republic by Mao Zedong represented the conflict of personal interests of the two superpowers: the U.S supporting the Nationalist Party and the Soviet Union supporting the Communist Party.
Do you mean the advantage of farming in Japan & NK?