LINA N DISCOVERIES

  • Period: to

    IMPORTANT DISCOVERIES

    THE MOST USEFUL INVENTIONS
  • TELEPHONE

    TELEPHONE

    ALEXANDER GRAHAM BELL
  • BALL POINT PEN

    BALL POINT PEN

    THE MOST SIMPLE TOOL
  • RADIO

    RADIO

    MARCONI
  • AUTOMOBILE

    AUTOMOBILE

    FORD MOTOR COMPANY
  • COMPUTER

    COMPUTER

    DIGITAL COMPUTERS

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