This video is about the great inventors of the world.I'll told you about their inventions.
#inventor of computer,
#inventer of television,
#inventor of telephone,
#inventor of electric bulb,
#inventor of safty pin,
#inventor of mobile phone,
#inventor of aeroplane,
#inventor of typewriter ,
#inventor of calculater,
#inventor of revolver,
#inventor of electric iron,
#inventor of lift,
#inventer of baloons