Historians have identified several causes that led to the outbreak of the Cold War, including: tensions between the two nations at the end of World War II, the ideological conflict between both the United States and the Soviet Union, the emergence of nuclear weapons, and the fear of communism in the United States
Constantine's "New Rome" was established at the site of ancient Byzantium which became Constantinople. The city of Constantinople when conquered by the Ottoman's took its modern name of Istanbul in 1923.
