Era
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1993-2001
5
1995-2005
5
2009-2017
5
Since 1960
5
To 1900
5
1888-1985
4
1921-2002
4
1947-1984
4
1960-
4
1963-1969
4
1976-
4
1980-
4
1985-1995
4
1988-
4
Revolution, 1775-1783
4
Since 2000
4
To 1500
4
1588-1679
3
1648-1789
3
1727-1760
3
1775-1783
3
1865-1921
3
1889-1964
3
1891-1937
3
1905-1983
3
1914-1940
3
1924-
3
1926-
3
1945 - 1989
3
1945-1991
3
1949-1976
3
1950-
3
1952 - 1998
3
1961-1963
3
1965-1975
3
1971-
3
1984-
3
1985-1991
3
Civil War, 1999-2003
3
Early modern, 1500-1700
3
Medieval, 500-1500
3
Since 1976
3
Since 1991
3
Since 2001
3
-1536
2
1469-1527
2
1486?-1546
2
1492-1648
2
1500-1799
2
1517-1882
2
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