The United States feared that if communism was successful on Vietnam, the rest of the countries that border it would soon turn into communism and those other countries that border that new communist country would also be converted to communism and so on. This is called the "domino theory" and made the United States to send troops to prevent the theory from happening.
D. Yoruba if its not this I don't know then well good luck
Answer:
The only true thing about article II gave the president the right to make policies