The "iron curtain" dropped over eastern europe shortly after the allies victory. the term "iron curtain" means which of the following?

a. the division of beliefs between northern europe and southern europe.
b. the involved dividing germany into sections controlled by the soviet union and the western powers.
c. it is an actual wall that was built dividing all of eastern europe from western europe.
d. the soviet border between communist east and mostly democratic west.

Context/explanation:

US president Franklin Roosevelt, British prime minister Winston Churchill, and Soviet premier Joseph Stalin, the leaders of the Allies in World War II, met at Yalta in February, 1945.  Churchill and Roosevelt pushed strongly for Stalin to allow free elections to take place in the nations of Europe after the war. At that time Stalin agreed, but there was a strong feeling by the other leaders that he might renege on that promise. The Soviets never did allow those free elections to occur. Later, Winston Churchill wrote, ""Our hopeful assumptions were soon to be falsified." Stalin and the Soviets felt they needed the Eastern European nations as satellites to protect their own interests.   A line of countries in Eastern Europe came into line with the USSR and communism.  Churchill later would say an "iron curtain" had fallen between Western and Eastern Europe.

the correct answer is b

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