Albert Einstein completed his doctoral thesis at the University of Zurich and was awarded a Ph.D.
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A newly discovered water beetle was named after Leonardo DiCaprio.
Adolf Hitler and his newlywed wife, Eva Braun, committed suicide in their bunker in Berlin, Germany.
Hawaii became a US territory when President William McKinley signed it into law.
Louisiana became the 18th state to join the United States of America.
Tom Hanks and Rita Wilson got married.
