Constantinople(former name for Istanbul) was the centere of Byzantine trade and culture and was incredibly diverse. The Byzantine Empire had an important cultural legacy, both on the Orthodox Church and on the revival of Greek and Roman studies, which influenced the Renaissance.
Iron Curtain, the political, military, and ideological barrier erected by the Soviet Union after World War II to seal off itself and its dependent eastern and central European allies from open contact with the West and other noncommunist areas.
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Eisenhower expanded the CIA's role by giving it the authority to perform secret operations. Among these were the overthrow of two governments.
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