What is communism and how did it seem to pose a threat to the united states?

Communism was started in 1917 but Karl Marx tough of it and wrote the communist manifesto around 1847. The soviet party in The Russian empire Took this idea and had a revolution in 1917. Communism had started and every one was being directed by Lenin, the leader of the communist party. Now during the cold war the united states had set its rockets toward the USSR in turkey. So then the USSR had put its Rockets in Cuba pointing towards the USA. And then the cold war went on from there.

warfare was the primary means of cultural transmission in both regions.