Era
20th century
34
1940-2020
25
1908-1972
17
1900-1999
16
20e siècle
14
1940 February 21-
11
19th century
10
1865-1950
8
1929-1968
8
1849-1877
7
1945-1989
7
1839-1915
6
1924-2005
6
1936-1996
6
1951-
5
1957-
5
1989-
5
1800-1899
4
1808-1873
4
1908-1973
4
1953-
4
1993-
4
1813-1896
3
1898-1951
3
1913-1999
3
1936-
3
19e siècle
3
Civil War, 1861-1865
3
Since 1900
3
Since 1951
3
1818-1883?
2
1852-1918
2
1861-1865
2
1897-1971
2
1911-1978
2
1924-
2
1926-2000
2
1932-
2
1961
2
2008
2
1800-1999
1
1827-1901
1
1829-1897
1
1841-1898
1
1847-1939
1
1853-1923
1
1861-1865, Civil War
1
1865 - 1950
1
1865-1900
1
1879-1950
1
more ...