Which major US foreign policy doctrine, announced in 1947, committed the United States to supporting ‘free peoples who are resisting attempted subjugation by armed minorities or by outside pressures,’ effectively initiating the policy of containment against the Soviet Union?

💡 Explanation:

The Truman Doctrine, announced by President Harry S. Truman in 1947, was a pivotal moment in modern history. It provided immediate economic and military aid to Greece and Turkey and formalized the US strategy of 'containment' against Soviet expansion during the emerging Cold War.