I might think the answer is number is 2 or 3
Answer:
The right choice is:
To prevent communism from spreading further through military aggression.
Explanation:
The Truman doctrine said that the United States would come to the aid of any country under a threat of internal forces (meaning a communist insurgency) or from an outside force (Soviet military aggression) to its domestic order. Washington would use all means available such as economic aid, military support or diplomatic initiatives. The doctrine was articulated by the Harry Truman administration to guide US policy of opposing communist expansion.
Washington D.C. Read your answer choices before giving up, this one was pretty obvious
Soviet expansion in Eastern Europe. 20 million Russians died during World War Two, so Stalin said he wanted a buffer zone of friendly states around Russia to make sure that Russia could never be invaded again.
-1,3 is the answer hope it helped