Respuesta :
Of all the given conflicts, the two that led to an expansion of Presidential foreign policy power were World War I and Vietnam. Hence, options A and C are correct.
What is Presidential foreign policy?
In any country, there are few higher authorities that are involved in all the policies that are run by the government of that nation, and the policy that is related to foreign affairs involves the President of the country. There is no such separate foreign policy that is run by the President of the country.
In the case of the U.S., the constitution of the country parcels the powers regarding foreign relations to both the houses that is the executive and the legislative. Although some powers are also granted to the military, while some to the President, and others, like the regulation of foreign commerce, to Congress. With the separation of power, there is a debate also spawned over the roles of the President and Congress in foreign affairs.
Thus, Options A and C are correct.
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