Which of the following is true of the Truman Doctrine? A. It amounted to an informal declaration of Cold War. B. It ended the policy of containment. End of exam C. It created the North Atlantic Treaty Organization. D. It established the Marshall Plan.
"A. It amounted to an informal declaration of Cold War" would be the best option, but it was not even remotely formal--in that it simply said that the US would come to the aid of any countries in danger of becoming communist.