There is a cognitive basis to prejudice and often an emotional component as well. when prejudice is displayed behaviorally, it is called:

discrimination.

Explanation:

Prejudice is the unjustified belief towards a group of people based on their affiliation to a different race, religion, political party, occupation, etc. While these beliefs remain affective and cognitive they called prejudice but when they start to reflect in action they are called discrimination. Therefore discrimination can be defined as unjustifiable treatment towards an individual based on their membership to a particular group.

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.