A. prove the legitimacy of dynastic rule is your answer
Mandate of Heaven was the saying that there should only be one ruler, which the gods approve of. This would rule out B) and D). Because the ruler is approved by the gods, it means that all should obey the appointed king.
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The post World War scenario was highlighted by the fall of some colonial powers and the rise/peaking of some others. A redistribution of colonies and territories took place following the Treaty of Versailles. Germany was the biggest loser, while Britain and France gained the most new territories
ANSWER: A) could not focus only on business and economics.
EXPLANATION: The dollar diplomacy was not limited to the discussions of business and economics favoring USA but it also expanded to terms of foreign policy. It was also discussed that the USA has the right to intervene if any country in the western hemisphere appears politically and financially vulnerable.
To help save money for the military