How would an emperor maintain the Mandate of Heaven? Please help me!

If a king ruled unfairly he could lose this approval, which would result in his downfall. Overthrow, natural disasters, and famine were taken as a sign that the ruler had lost the Mandate of Heaven. The Mandate of Heaven did not require a ruler to be of noble birth, and had no time limitations.

i believe it d) heterogeneous

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.

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