According to chinese beliefs, what role did the mandate of heaven play in the dynastic cycle?

answer; /// i believe that the correct answer is (d)the huang he river valley;

for the united states of america, 1945 to 1964 was a time of high economic growth and general prosperity. it was also a time of confrontation as the capitalist united states and its allies politically opposed the soviet union and other communist countries; the cold war had begun.

explanation: