Era
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18th century
43
1965-1975
42
21st century
41
1868-1912
40
Since 1917
38
1976-
37
Since 1960
37
1910-1936
36
1949-1976
36
1919-1932
35
1946-1948
34
Since 1949
34
1985-1991
33
Since 1918
33
1789-1900
32
1800-1899
32
1843-1914
32
1961-1975
32
1648-1789
30
1961-1963
30
1977-1981
29
1981-
29
1949-1990
28
1993-
28
Civil War, 1936-1939
28
Since 1991
28
1900-1945
27
1904-1905
27
1953-1961
27
1979-
27
1913-1921
26
1914-1939
25
1945 - 1946
25
1948-1980
25
1973-1993
25
20e siècle
25
Revolution, 1775-1783
25
1868-
24
1918 - 1945
24
1948-
24
1914-1945
23
1975 - 1985
22
Since 1914
22
1789-1815
21
1801-1809
21
1898
21
1917-1948
21
1963-1969
21
1980-
21
Since 1975
21
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