Republican Party in Detroit nominated Ronald Reagan for US president.
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The world's first atomic bomb was detonated.
Adolf Hitler planned to invade Britain under the guise name 'Operation Sealion.'
The journey of the Islamic prophet Muhammad and his followers began. This was known as the Hijrah.
US Marine Major John Glenn's 'Project Bullet' broke the transcontinental speed record.
The opera 'Die Entführung aus dem Serail' by Wolfgang Amadeus Mozart premiered in Vienna, Austria.