The truman doctrine of the late 1940s was
a) a plan for the peaceful use of atomic energy.
b) aimed at a peaceful settlement in the middle east.
c) a plan for general disarmament following world war ii.
d) the u.s. policy of offering aid to countries threatened by communism.
eliminate

The Truman Doctrine was the U.S. offering aid to countries that were threatened by communism. 
The Truman Doctrine was created in 1947, by President Truman. Truman was the Vice President of the US during World War 2. He was also a World War 1 veteran. The Truman Doctrine can be interpreted as the opposite as the Treaty Versailles. 

family, school, peers, and mass media. Family is usually considered to be the most important agent of socialization.