Era
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1900 - 1999
4
1904-1971
4
Edward VII, 1901-1910
4
Medieval, 500-1500
4
1613-1917
3
1765-1843
3
1789-1900
3
1840-1928
3
1889-1945
3
1917-1936
3
1918-1945
3
1920-1970
3
1948-1960
3
1960-
3
1980-1993
3
1980-2020
3
1993-
3
1995-
3
2000-
3
2009-
3
Medieval period, 1066-1485
3
Primitive and early church, ca. 30-600
3
Revolution, 1917-1921
3
Since 1900
3
Since 1975
3
Since 1991
3
Since 2000
3
To 1799
3
To 1810
3
To 1964
3
1392-1910
2
146 B.C.-323 A.D.
2
1500-1699
2
1517-1882
2
1600-1799
2
1600-1899
2
1661?-1731
2
1748-1836
2
1775-1899
2
1789-1799
2
1789-1815
2
1791-1841
2
1792-1865
2
1800-1837
2
1800-1901
2
1800-1918
2
1800-1950
2
1801-1921
2
1811-1889
2
1815
2
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