Please view the image to answer and plss give explanation itll help alot if ya do :)

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.

answer; omb;

the answer is new york- west.

                                          good luck!