The time of the Marshal plan was when the US was doing this.
Step-by-step explanation:
A considerable period of United States foreign policy focused on the containment of the spread of communism in other nations.
It began with the Marshall plan which basically gave reparations to other anons to rebuild and in turn follow the way of US in terms of economics.
Then there were many proxy wars and military coups that were designed to make sure that the spread of communism was stopped in the world .
This included the Korean war, the Vietnam war and many of the coups in the Latin America.