It gave us light so we can see
computer, television, telephone , internet, light bulb, post, car, bicycle, paper, electricity, aeroplane.
I think electricity is the answer
Monotheism
Telephone & Electricity
Electricity
the iphone
Debatable, but most likely electricity.
Well, I would say the gun, with the car or aeroplane a very close second. The wheel and fire.
Electricity/light bulb
One invention in the 17th century that significantly altered the way people saw their world was the microscope. The other invention was the telescope.
The best invention in the world is definitely velcro
Television and telephones