Answer:
True, U.S. support for Turkey and Greece after WWII was an early example of the Truman Doctrine. As it looked to prevnt nations falling into communism.
Step-by-step explanation:
Former U.S. President Harry Truman created the so-called "Truman Doctrine" after he created a policy to prevent Soviet Communist expansionism over geopolitical determining areas during the cold war. Turkey and Greece, were one of the earliest examples of this because even though the U.S. didn't help them militarily it provided funds to impulse their economies and their armies. So they could resist any attempt of soviet Communist imperialism. It also leads to the creation of NATO and the cold war counterpart to stop the spread of imperial communism.