What were some of the essential themes of the Truman Doctrine, the Marshall Plan, and the policy of "containment?"

Use only the sources provided

Sources:

Title: Henry A. Wallace, Letter to President Truman (1946)

Question to consider:

How do the assumptions and arguments adopted by Wallace compare with those found in the previous statements by Truman and the National Security Council?

Source:

http://historymatters.gmu.edu/d/6906 (Links to an external site.)

Title: The Truman Doctrine: Address to Congress (1947)

Introduction

Question to consider

How does Truman define "freedom" in the postwar world?

Abridged Text

The Truman Doctrine: Address to Congress, March 1947

Greece's neighbor, Turkey, also deserves our attention.