The iron curtain divided the world into:
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a. the eastern bloc and the western bloc
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b. the western bloc and the capitalist bloc.
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c. the north bloc and the south bloc
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d. the eastern bloc and the communist bloc
submit

The Iron Curtain divided the world into Option A). The Eastern Bloc and the Western Bloc.

Explanation:

The Iron Curtain refers to the ideological divide that arose between the Soviet Union and the countries of Western Europe, North America, Australia, and New Zealand. The Iron Curtain terms symbolized how little information was allowed to be shared between the countries and how the Soviet Union's citizens were cut off from the West. The divide that emerged after WWII between the United States and the Soviet Union during this period up until the fall of the Berlin Wall in 1989 was also known as the Cold War.  

would not cooperate with each other voluntarily.

by improved communication.