Know what has been discovered. Their photos were also given.

[chunna]

Who invented the mobile phone?
Martin Cooper

Do you discover the laptop?
Bill Magrors

Who discovered the pen?
John Loud

Who invented the robot?
George Charles Devoll

Discover the motorcycle
Who?
Gottlie Delmar

Who invented the pistol?
Samuel Coult

Discover the helicopter
Who?
Igor Sikorsky

Who invented the power?
Michael Faraday

Who invented the rocket?
Robert Gordard

Discover the microphone
Who?
Abraham Horoscope
Abraham Horoscope - - - - - - - - -