Louisiana became the 18th state to join the United States of America.
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George Washington gave his first speech as the first President of the United States.
Hawaii became a US territory when President William McKinley signed it into law.
Adolf Hitler and his newlywed wife, Eva Braun, committed suicide in their bunker in Berlin, Germany.
Mr. Potato Head became the first toy advertised on TV.
Albert Einstein completed his doctoral thesis at the University of Zurich and was awarded a Ph.D.
