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March 14th, the Cotton gin was invented by Eli Whitney.
Alfred Noble invented dynamite.
Henry Cort invented the steel roller for steel production.
April 3rd, The first U.S. mail system (Pony Express) Was invented.
Edward Jenner invented a vaccination for small pox.
August 17th, Robert Fulton invented the steam boat.
David Bushnell invented the first submarine.
Joseph Port invented the first grain elevator.
Samuel Morse invented the Morse code to communicate.
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