In the late 1940s, the United States responded to the growing threat presented by the Soviet Union by trying to stem the tide of Communism by supporting and propping up governments that opposed Communism.
I think there are a lot. But I am not a genius
Herbert Hoover, who in World War I served as head of the U.S. Food Administration and became know for his humanitarian efforts in Belgium during the war.
After WWll many of the weapons were left, and the Russian leader Nikita Kruschev decided that the Soviet Union needed more defense. So, they put missles in Cuba. J.F. Kennedy forced Kruschev to remove the missles, but, the Cold War wasn't over. It was just the beginning. In the years that followed, many countries tried to frighten each other by showing off the strength of their weapons, Navy, etc. That is what caused the Cold War.
Answer:
people invaded other countries and traded, spreading language and customs
