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Edward Jenner protected people from disease
https://en.wikipedia.org/wiki/Vaccination -
Johannes Gutenberg allowed literacy to greatly expand
https://en.wikipedia.org/wiki/Printing_press -
Horace Wells provided a great leap forward for medicine
https://en.wikipedia.org/wiki/Anesthesia -
Alexander Graham Bell spread communication across wide areas
https://en.wikipedia.org/wiki/Telephone -
Thomas Edison powered countless social changes
https://es.wikipedia.org/wiki/Electric_Light_Orchestra -
Karl Benz increased personal mobility and freedom
https://en.wikipedia.org/wiki/Car -
John Froelich started agricultural mechanization
https://en.wikipedia.org/wiki/Tractor -
Guglielmo Marconi & John Baird made the world smaller
https://en.wikipedia.org/wiki/Television -
Orville and Wilbur Wright allowed people and products to quickly move
https://en.wikipedia.org/wiki/Airplane -
John Atanasoff, et al. transformed business world; predecessor to the Internet
https://en.wikipedia.org/wiki/Computer