Radio.
Radio. Or more specifically, wireless telegraphy.
Radio (A+)
One of the most life changing invention is the internet, It provides us with information in an instant.
cuz he invented a invention somthing none of us could do
The nuclear bomb was probably the most important invention in 1945
Research the invention of the computer.
Fire
microscopes
because the invention of the electron microscope helps us in the community by helping us understand the cellular functions.
Edison is best known for his invention of the Electric Light Bulb, and the Phonograph, Motion Pictures, etc. He and his laboratory in Menlo Park, NJ were a fountain of invention. He holds most US Patents ever issued either singly or jointly to a single man.
Yes it was invented in Boston
the invention of the cotton gin