Era
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1914-
3
1917-1953
3
1926-
3
1933-1959
3
1937-2006
3
1948-1994
3
1949-1976
3
1976-2002
3
2000-2099
3
265-30 B.C
3
265-30 B.C.
3
Commonwealth and Protectorate, 1649-1660
3
Republic, 1912-1949
3
1564-1616
2
15th century
2
16th century
2
1859-1941
2
1888-1918
2
1900-2099
2
1910-
2
1912-1976
2
1913-1992
2
1918-1945
2
1918-2013
2
1926-2011
2
1929-1981
2
1931-1939
2
1939-1975
2
1942-
2
1942-2011
2
1945-1991
2
1946-1981
2
1950-
2
1952-
2
1960-
2
1976-
2
1981-
2
1984-
2
1994-
2
2000-
2
2002-
2
30 B.C.-284 A.D.
2
53-44 B.C.
2
63 B.C.-14 A.D.
2
Augustus, 30 B.C.-14 A.D.
2
Consulate and First Empire, 1799-1815
2
Revolution, 1959
2
Since 1900
2
Since 1945
2
Since 1990
2
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