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Alexander Graham Bell spread communication across wide areas
https://blog.eero.com/the-evolution-of-communications-from-morse-code-to-140-characters/ -
Horace Wells provided a great leap forward for medicine
https://mywhitedental.com/how-dental-tools-have-evolved/ -
Edward Jenner protected people from disease
https://www.bbvaopenmind.com/en/science/leading-figures/jenner-and-the-discovery-of-vaccination/ -
Thomas Edison powered countless social changes
https://interestingengineering.com/the-invention-and-history-of-the-printing-press -
Edward Jenner protected people from disease
https://www.bbvaopenmind.com/en/science/leading-figures/jenner-and-the-discovery-of-vaccination/