Era
20th century
72
1900-1999
31
1952-1970
30
1945-
22
1818-1883
17
21st century
15
1952-
10
1970-1981
10
1918-1970
8
1919-1952
7
1926-1971
7
20e siècle
7
Since 1945
6
-approximately 652
5
Revolution, 1952
5
1887-1958
4
1891-1937
4
1900-2099
4
1917-1948
4
1975-1990
4
1981-2011
4
1870-1924
3
1900 - 1999
3
1914-1978
3
1918-1981
3
1934-
3
1958-
3
1981-
3
1989-
3
1760-1825
2
1882-1952
2
1890-
2
1919-1984
2
1921-1958
2
1944-1952
2
1945-1989
2
1946-
2
1951-
2
1952
2
1952 - 1970
2
1965-1975
2
1979-1997
2
Civil War, 1975-1990
2
Commune, 1871
2
Since 1946
2
Since 1952
2
-1917
1
-1964
1
1871
1
1879-1940
1
more ...