Question

what was the purpose of the truman doctrine and marshall plan?

to promote u.s. isolationism

to prevent the spread of communism

to increase international trade

Explanation:

The Truman Doctrine and Marshall Plan were part of the U.S. containment policy during the Cold War. Isolationism was not the goal (the U.S. was actively involved in Europe), and increasing international trade was not their primary purpose. Their main aim was to stop the spread of communism by supporting countries against communist influence (Truman Doctrine with military/financial aid to Greece, Turkey; Marshall Plan with economic aid to Western Europe to rebuild and resist communism).

Answer:

B. to prevent the spread of communism