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history of technology
Fire extinguishers are invented. -
Elisha Graves Otis invents the elevator with built-in safety brake.
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Joseph Monier invents reinforced concrete.
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Christopher Latham Sholes invents the modern typewriter and QWERTY keyboard.
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Alexander Graham Bell patents the telephone, though the true ownership of the invention remains controversial even today.
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Thomas Edison opens the world's first power plants.
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Supercomputers (the world's fastest computers) are now a mere 30 times less powerful than human brains.
