The excerpt below is from president harry truman's address to congress on march 12, 1947. i believe that is must be the policy of the united states to support free peoples who are resisting attempted subjugation by armed minorities or by outside pressures. which u.s. foreign policy was adopted based on this speech?
a. intervention in iraq
b. the containment of communism
c. american entry into world war ii
d. humanitarian aid to developing nations