President Johnson uses the Gulf of Tonkin (or USS Maddox) incident to push through Congress a resolution to give him:

Ability to take all necessary measures to stop any and all armed attacks against the United States and to prevent any further aggression swiftly

Explanation:

pretty sure the answer explains it, but basically Vietnam allegedly attacked two US Naval invaders which led to Congress passing that resolution and then caused the American involvement in the Vietnam war (if you need any more elaboration let me know, I hope this helps)

the answer wold be b) travel among nations should be regulated by an international organization

if you could provide the poem below, i'd be happy to you!

explanation:

you didn't give us the poem, or the title of the poem. but it is essential for you to give us that, otherwise we can not detect when the poem has a tonal shift!