Which american president began the united states' policy of aid to south vietnam?
a. john f. kennedy
b. lyndon
b. johnson
c. harry s truman
d. dwight
d. eisenhower

The Correct Answer is "Eisenhower".

Explanation:

South Vietnam, with its capital in Saigon was largely supported by the United States.In Vietnam, the power vacuum was created by the French withdrawal so the United States felt they should fill this power vacuum.The Eisenhower Administration provided the Economic and military advisers and aid to South Vietnam.By just 1963 there were approx 16000 active United States troops were stationed in Vietnam.

The US government has spent billions and billions of dollars pushing so called "green" projects because they would supposedly be more ecologically friendly.

Turns out that so far most of them have been utter financial failures and some have even been worse ecologically than were the things they were supposed to replace.
I hope that helped