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Cotton Gin
Invented by Eli Whitney -
Steamboat
Invented by Robert Fulton -
Dynamite
Invented by Alfred Nobel -
Telegraph
Invented by Samuel F. B. Morse -
Plows
Invented by John Deere -
Sewing Machine
Invented by Elias Howe -
Elevator Brake
Elisha Otis invented the elevator brake. -
Telephone
Invented by Alexander Graham Bell -
Alternating Current
Invented by Nikola Tesla -
Diesel Engine
Invented by Rudolf Diesel
