World War I had NOTHING to do with communism.
Yea. It was during and after WWII. And the main country that fought to spread is was the Soviet Union, or Russia.
That Communism would spread all over the world.
The policy of the US toward the Soviet Union after WWII was shaped by a belief that the Soviets intended to spread Communism throughout the world.
To spread communism outside of Russian soil.
When the Soviets marched through eastern Europe they occupied it and therefore it was communist.
The spread of Communism.
Europe
The Reagan Doctrine aimed to prevent the spread of communism.
This is not a complete authoritative answer but I do know that during this time the spread of communism was a great concern and priority for the US government and to some degree our allies. North Vietnam's ruler Ho Chi Minh I believe was dedicated to the cause of socialism and wanted to spread this governing ideology to south Vietnam. It was considered to be in the best interests of the US to help prevent the spread of communism to the South.
No.
Containment
It happened during the cold war because people were scared of communism and its spread across the world. The theme of the cold war was the prevention of the spread of communism, and many people thought that communism was spreading inside the US. The US was extremely paranoid about communism, which led to its involvement in Vietnam and many other wars. In a nut shell, Americans were so paranoid that they thought communism was spreading in their own country.
What was the name of the US Foreign policy that was designed to limit the influence of the Soviets & communism on the world?