Certainly! Here's a brief essay on the topic:
Throughout the 20th century, the United States was heavily involved in containing the spread of communism around the world. This policy was most notably applied in Berlin, Korea, and Cuba, where the U.S. sought to prevent the expansion of Soviet and Chinese influence.
In Berlin, the U.S. and its allies implemented a policy of containment in response to the Soviet Union's blockade of West Berlin in 1948. This policy involved airlifting supplies to the city in order to keep it from falling under Soviet control. The U.S. also established a military presence in West Germany, which served as a deterrent against further Soviet aggression in Europe.
In Korea, the U.S. intervened in the Korean War in 1950 in order to prevent North Korea from spreading communism to the South. The war lasted until 1953, and resulted in a stalemate that left the two Koreas divided along the 38th parallel. The U.S. maintained a military presence in South Korea after the war, and continues to do so to this day.
In Cuba, the U.S. became involved in the early 1960s, following the Cuban Revolution and the rise of Fidel Castro to power. The U.S. attempted to overthrow the Castro regime through a failed invasion at the Bay of Pigs in 1961. This was followed by a naval blockade of Cuba in response to the discovery of Soviet missiles on the island in 1962. The Cuban Missile Crisis was ultimately resolved through a diplomatic agreement between the U.S. and the Soviet Union.
Overall, the U.S. sought to contain the spread of communism through a combination of military, economic, and diplomatic means. This policy was largely successful in preventing the spread of communism to other parts of the world, though it also led to a number of conflicts and tensions between the U.S. and its allies on one hand, and the Soviet Union and its allies on the other.