For it's entire existence, New York City has been controlled by... A. The Dutch
B. The Americans
C. No one - it changed hands during the war
D. The British​

the answer is

a) revise existing treaties

b) do away with political alliances

c) prevent the spread of communism

d) bring an end to european colonization

the main goal of the southeast asia treaty organization was to prevent the spread of communism in southeast asia.