Era
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1933-
5
1961-
5
1961-1971
5
2001-
5
To 1865
5
1709-1784
4
1712-1778
4
1740-1795
4
1819-1900
4
1862-1945
4
1907-1959
4
1933-1945
4
1971-1981
4
1991-
4
2009-
4
Early modern and Elizabethan, 1500-1600
4
Revolution, 1789-1799
4
Since 1990
4
To 146 B.C.
4
1058-1111
3
1225?-1274
3
1500-1699
3
1600-1699
3
1661?-1731
3
1700-1899
3
1750-1918
3
1796-1872
3
1810-1865
3
1834-1910
3
1847-1938
3
1867-1945
3
1869-1948
3
1876-1929
3
1881-1973
3
1887-1975
3
1896-1988
3
1898-1984
3
1915-2009
3
1916-2001
3
1993-
3
1997-
3
2000 - 2099
3
Famine, 1845-1852
3
Middle Ages, 600-1500
3
Since 1991
3
Since 1997
3
To 1933
3
-1336?
2
1600-1799
2
1608-1674
2
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