Era
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1915-1999
1
1917-1999
1
1919-2016
1
1920-1950
2
1922-2003
3
1925-1953
1
1928-2007
1
1929-
1
1931-
1
1931-1989
1
1932-
3
1933-
1
1933-1945
4
1938-2015
1
1939-
1
1939-1945
1
1940-
1
1940-1960
1
1940-1991
1
1943-1955
2
1943-2020
1
1944-
1
1945-
3
1945-1970
1
1958-
1
1958-1999
1
1962-
1
1971-
2
1984
1
1986
1
1987
2
1989
1
1990
2
1991
1
1995
1
1996
1
19th century
20
2000-2020
3
2000-2099
4
2020-2040
2
2021
1
20th century
49
21st century
8
30 B.C.-284 A.D.
1
373?-463?
1
3rd cent
3
449-1066
1
476-1492
1
490-approximately 565
1
600-1500
1
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