Truman Doctrine: This was a key component of the containment policy where President Truman declared that the United States would provide political, military, and economic assistance to any country threatened by communism.
Marshall Plan: As part of the containment policy, this plan involved providing financial aid to help European countries rebuild their economies after World War II. It aimed to strengthen these nations against communist influences.
NATO (North Atlantic Treaty Organization): To contain Soviet expansionism, this military alliance was formed between Western European countries and North America. It emphasized collective defense against potential aggression from communist nations.