One cause of suburbanization in the United States during the 1920s was increased family income, due to the boom that took place in the American economy right before the Great Depression hit in 1929.
The Europan countries which were considered to be "behind the Iron Curtain" included: Poland,Estearn Germany, Czechoslovakia, Hungary,Yugoslavia, Romania, Bulgaria, Albania and the Soviet Union. Hope this helps
If you're referring to the post WW2 period, then it was fairly simple, the United States wanted to create a democratic liberal country that would share their political goals in Europe, while the Soviets wanted to make it into a Communist state that would share their goals and ideals in Europe. Each would have their own central European country to control the remainder of Europe.
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What about it?
I don’t even know what is your question