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1450
Printing Press
Johannes Gutenberg allowed literacy to greatly expand -
Vaccination
Edward Jenne rprotected people from disease -
Anesthesia
Horace Wells provided a great leap forward for medicine -
Telephone
Alexander Graham Bell spread communication across wide areas -
Automobile
Karl Benz increased personal mobility and freedom -
Gas powered tractor
John Froelich started agricultural mechanization -
Airplane
Orville and Wilbur Wright allowed people and products to quickly move -
Radio and Television
Guglielmo Marconi & John Baird made the world smaller -
Computer
John Atanasoff, et al. transformed business world; predecessor to the Internet