Era
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Since 2000
11
1815-1861
10
1837-1901
10
1775-1783
9
1890-1969
9
1912-1947
9
1914-1945
9
1923-
9
1924-2018
9
1949-
9
1952-
9
1977-1981
9
2001-2009
9
2009-2017
9
Civil War, 1861-1865
9
Since 1993
9
1700-1799
8
1743-1826
8
1945-1961
8
1945-1990
8
1979-
8
Civil War, 1936-1939
8
Revolution, 1917-1921
8
1719-1787
7
1800-1999
7
1890-1970
7
1894-1917
7
1900-1945
7
1912-1949
7
1917-1963
7
1922-1945
7
German occupation, 1940-1945
7
Since 1991
7
1783-1815
6
1869-1940
6
1883-1945
6
1921-1923
6
1931-2022
6
1934-
6
1939-1975
6
1945-1964
6
1964-1968
6
1985-1991
6
1997-
6
2001-
6
2002-
6
2016
6
2017-
6
Civil War, 1994
6
1644-1912
5
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