The letter of the Einstein-Szilard warned President Roosevelt in 1939 that Germany was experimenting for nuclear weapons. The letter was written by Szilard with his two assistants Hungarian physicists (Teller and Wigner) and was signed by Albert Einstein. It stated that Germany may start making nuclear bombs and that the United States had better watch out for this.
President Franklin Roosevelt had a swift response to this and started the Manhattan Project, which was a research project that developed and produced the first atomic explosive/bomb during the time of Second World War.
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1776 because that was the year America became free because of the Declaration of Independence
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Marie Curie was the scientist whose private papers had to be decontaminated for two years in the 1990's before being put on file at the National Library in Paris. Marie Skłodowska Curie was a Polish and naturalized-French scientist and chemist who escorted pioneering analysis on radioactivity. She said that being a historian is not without its jeopardies.
