US History:Truman and Cold War. This is a chapter on Truman, the end of World War Two, and the beginnings of the Cold War from Wikibooks. This project is described, "Wikibooks is a collection of open content textbooks, manuals, and other texts, with supporting book-based texts that are being collaboratively written. This site is a wiki, meaning that anyone, including you, can edit any book module right now by clicking on the edit this page link that appears in every Wikibooks module. "
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World War II upset the balance of power by reducing the influence of France and the United Kingdom. The United States and the Soviet Union became the World's only remaining superpowers, and their relations were not exactly friendly. The two nations never actually engaged in military conflict, so the hostilities became known as the Cold War.
The Soviet Union believed that its control of Eastern Europe was vital to its security. As agreed at the Yalta Conference, the World War II Allies divided Germany into four zones, giving one zone each to the United Kingdom, France, the United States, and the Soviet Union. The Soviet Union's zone, known as East Germany, was immediately transformed into a Communist state, while the other three zones, West Germany, were not. The city of Berlin, which was surrounded by East Germany, was divided in two parts, between the East and West Germany.