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.
Answer:
He allied with england in order to defeat the spanish armada
The legislative branch must approve any Presidental appointments unless a veto is used.
I think its because they are trying there best to keep people like hunters able to legaly hunt but they actauly dont hunt