Attachment #1
Key Innovations of the Twentieth Century
Invention/Innovation
Year
Psychoanalysis
1900
Radio receiver
1901
Motorized airplane
1903
Einstein’s Theory of Relativity
1905
Ford Model T
1908
Assembly line
1913
Women’s right to vote
1920
Vacuum
1923
Television
1926
“Talking” movies
1927
Social Security
1935
Splitting the atom
1942
Atomic bomb
1945
Transistor
1947
First modern computer
1948
Polio vaccine
1952
Discovery of DNA
1953
Poodle skirts
1955
Rock and roll
1955
Affirmative Action
1965
Miniskirts
1965
Internet
1969
Astronauts on the moon
1969
Personal computer
1975
Cellular telephone
1979
World Wide Web
1992
DVD player
1995