Cultural Evolution (1900-2000)

Social Evolution

1900
1904
1905
1905
1906
1913
1920
1920
1931
1938
July, 1961
1971
1971
February 1, 2004

Medical Evolution

1901
1920
1922
1924
1926
1927
1928
1940
1940
1950
1953
1954
1957
1973
July 25, 1978
1981
1987
1991
1996
June 26, 2000
2005

Non-Medical Technological Evolution

1900
1901
1901
1901
1902
1903
1903
1905
1907
1909
1911
1912
1914
1919
1920
1926
1928
1933
1936
1942
1942
1945
1946
1947
1948
1951
1954
1955
1956
1958
1958
1962
1965
1968
1970
1973
1973
1991
1998
2001