Era
20th century
136
1900-1999
49
19th century
25
1960-1980
18
1961-1969
14
1800-1899
13
1945-1989
11
18th century
10
1865-1918
8
1945-
8
1933-1945
6
21st century
6
Since 1900
6
1800-1859
5
1989-
5
Civil War, 1861-1865
5
Revolution, 1775-1783
5
1980-
4
1760-1820
3
1775-1783
3
1783-1809
3
1797-1874
3
1805-1879
3
1813-1865
3
1818-1895
3
1863-1877
3
1900 - 1999
3
20e siècle
3
To 1865
3
To 1964
3
To 1999
3
1700-1820
2
1815-1861
2
1831-1910
2
1865-1933
2
1878-1967
2
1885-1967
2
1886-1918
2
1909-1972
2
1912-1989
2
1915-
2
1919-1933
2
1944-
2
1945-1953
2
1970-
2
1700-1799
1
1700-1809
1
1700-1899
1
1737-1809
1
1783-1865
1
more ...