Era
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1869-1948
3
1881-1938
3
1881-1973
3
1890-1960
3
1931-
3
1945-1970
3
1945-1980
3
1948-
3
1949-1976
3
1951-
3
1953-1985
3
1959-
3
1959-1990
3
1970-1991
3
1971-
3
1974-
3
1981-1989
3
1985-
3
510-30 B.C.
3
British occupation, 1765-1947
3
Middle Ages, 600-1500
3
Revolution, 1959
3
Since 1950
3
Since 1959
3
Since 1970
3
Since 1975
3
Since 1979
3
Since 1990
3
To 1800
3
Unification, 1990
3
1081-1453
2
1401-1464
2
1500-1799
2
1564-1616
2
1600-1699
2
1644-1912
2
1770-1850
2
1775-1899
2
1780-1831
2
1783-1850
2
1789-
2
1789-1799
2
1800 - 1999
2
1810-1865
2
1819-1891
2
1819-1892
2
1824-1948
2
1825-1911
2
1843-1916
2
1844-1925
2
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