Tom Hanks and Rita Wilson got married.
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The USA signed The Louisiana Purchase in Paris.
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.
Albert Einstein completed his doctoral thesis at the University of Zurich and was awarded a Ph.D.
Two new moons orbiting Uranus were announced in Nature magazine.