Era
20th century
32
1869-1948
27
1900-1999
16
1929-1968
12
1993-
5
1912-1987
4
1919-1947
4
1923-2015
3
1780-1831
2
1891-1956
2
1906-1962
2
1928-
2
1945-
2
1991-
2
1992-2006
2
2001-2009
2
21st century
2
324 B.C.-1000 A.D.
2
Revolution, 1789-1799
2
Since 1993
2
To 324 B.C.
2
To 997
2
1783-1865
1
1800-
1
1828-1910
1
1836-1909
1
18th century
1
1900 - 1999
1
1909-1948
1
1914-1990
1
1915-1968
1
1915-2004
1
1918-2013
1
1926-2017
1
1941-
1
1941-2006
1
1946-1974
1
1948-
1
1957-2011
1
1959-
1
1960-1980
1
1961-1975
1
1970-
1
1973-1988
1
1974-
1
1985-
1
1987-1993
1
1992-
1
19th century
1
Civil War, 1642-1649
1
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