What was one of the US plans to contain the spread of Communism in Europe?

The Marshall Plan was a significant American initiative designed to aid the economic recovery of European nations after World War II. Officially known as the European Recovery Program, it aimed to prevent the spread of communism by stabilizing European economies and promoting political stability. By providing substantial financial assistance to war-torn countries, the United States sought to bolster democratic governments and mitigate the appeal of communist ideologies, which often flourished in economically distressed conditions.

The aid offered through the Marshall Plan helped to rebuild infrastructure, modernize industries, and improve living standards, thus reducing the likelihood that countries would turn to communism as a solution to their problems. This approach was based on the belief that a prosperous Europe would be less susceptible to communist influence, maintaining political alignments that favored capitalism and democracy.

Other plans and agreements mentioned in the choices had different focuses and did not specifically target economic recovery as a strategy to contain communism.