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Error Report
Question: In which year did the following happen: U.S. breaks diplomatic relations with Cuba; Moscow announces putting first man in orbit around Earth, Major Yuri Gagarin; East Germans erect Berlin Wall between East and West Berlin to halt flood of refugees; Russia detonates the world's largest nuclear weapon ever constructed, 'Tsar Bomba' over Novaya Zemla, with the power of approx 3800 Hiroshima Bombs.