Era
prev ...
1909-1913
1
1912
3
1913-1994
1
1917-1963
1
1922-1987
1
1923-1929
1
1924-
2
1928
1
1928-
1
1929-1933
2
1932
3
1932-1945
1
1933-1945
2
1941-
3
1945-1989
2
1946-
1
1948
1
1951-
2
1953-1961
1
1960
1
1963-1969
1
1964
1
1969-2015
1
1974-
1
1974-1977
1
1976
3
1977-1981
2
1981-1989
4
1984
5
1988
2
19th century
4
2008
2
2009-2017
2
2016
3
20th century
3
Civil War, 1861-1865
1
History
1
To 1898
1
b. 1821
1