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1945 - 1990 (the end of World War II to the fall of the Berlin Wall
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"Atomic bomb explodes over Nagasaki." Image. National Archives. American History. ABC-CLIO, 2013. Web. 10 Oct. 2013.
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"Aerial view of Mariel Bay, Cuba, and Soviet missiles." Image. Library of Congress. American History. ABC-CLIO, 2013. Web. 10 Oct. 2013.
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"Berliners dance on the Berlin Wall." Image. National Park Service. American History. ABC-CLIO, 2013. Web. 10 Oct. 2013.