please give me links from which i can find the answer to this question

the North Atlantic Treaty Organization (NATO) was based on the principle of
a. free trade
b. collective security
c. appeasement
d. isolationism

thanks:D

2 answers

How could a group of nations be based on isolationism. I suggest you look up ISOLATIONISM in a dictionary, like Dictionary.com.

This site has your answer.

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Yes. B is correct.