Answer: The eruption of the Cold war and the containment that came to be known as The Truman Doctrine.
Step-by-step explanation:
The Cold War developed when disagreements about how the postwar world created suspicions and distrust among the United States and the Soviet Union. Containment of the Soviet Union became American policy in the years following the war. The president asked Congress to grant millions of dollars for economic and military aid, especially to Greece but also to Turkey. Containment also required extensive economic aid for recovery Western Europe destroyed by war. With many countries of the region economically and politically unstable, the United States feared that communist parties instructed by Moscow would try to take over the control.