Final answer:
Containment was a U.S. policy to prevent communism's spread globally, seen in actions like the Vietnam War, aiming to counter Soviet influence.
Explanation:
Containment was the U.S. policy post-World War II aimed at preventing the spread of communism and Soviet influence globally. It involved constant vigilance and alliances to counter Soviet aggressive moves.
One example of containment was the U.S.'s involvement in regions like Vietnam, where the Cold War struggle extended to the third world.
Despite challenges and pressures, the U.S. maintained a stance to protect its security interests and limit Soviet and communist influence beyond the areas they controlled post-WWII.
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