What was the link between the policy of containment and the united state's involvement in korea and vietnam?

 Under its foreign policy of containment, the United States aimed to keep communism from expanding.  That meant trying to stop communist takeover of all of Korea and all of Vietnam.

Explanation/context:

The policy of containment focused on keeping communism and the Soviet Union's influence limited.  It influenced US foreign policy by prompting intervention in places like Korea and Vietnam to stop the spread of communism.

George F. Kennan recommended the policy of containment which set the tone for US involvement in world relations following World War II.  Kennan was an American diplomat in Moscow after World War II.  In 1946, he sent what became known as "the long telegram" of his advice about what the USA needed to do about the Union of Soviet Socialist Republics (USSR) and the threat of communism.  He recommended not confronting the USSR directly but simply trying to keep communism contained to where it already had taken hold.

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the federalist party which advocated strong centralization dominated the united states government till 1800. so 1800 election transformed the power from one party to another party for the first time and was thus a turning point in american history. so jefferson called it "revolution of 1800".

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