In 1987, the boundary between eastern and the western Europe was the Berlin Wall. When President Ronald Reagan called for that notorious barrier to be torn down, he initiated the end of the Cold War. The Berlin Wall was much more than a physical boundary; it symbolized the sordid Soviet aggression and control over eastern Europe, which collapsed when the Soviet Union disintegrated. President Reagan and the U.S. policies that ensued were not only the catalyst of political change in eastern Europe. The U.S. was also the ongoing major force that led to the unification of Germany and the disintegration of the Soviet Union.

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