Albert Einstein completed his doctoral thesis at the University of Zurich and was awarded a Ph.D.
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George Washington gave his first speech as the first President of the United States.
The USA signed The Louisiana Purchase in Paris.
Mr. Potato Head became the first toy advertised on TV.
Pellegrini Turri finished the construction of the world's first commercial typewriter.
Adolf Hitler and his newlywed wife, Eva Braun, committed suicide in their bunker in Berlin, Germany.
