Era
20th century
46
19th century
21
1900-1999
20
1871-1945
11
1800-1899
10
1900 - 1999
9
1843-1916
7
1835-1910
6
1900-1938
6
Civil War, 1861-1865
6
1861-1865
5
1817-1862
4
1886-1963
4
1706-1790
3
1838-1905
3
1842-1910
3
1861 - 1865
3
1863-1930
3
1891-1958
3
1911-1920
3
1917-
3
1921-1930
3
Revolution, 1775-1783
3
1756-1812
2
1775 - 1783
2
1775-1783
2
1789-1851
2
1811-1882
2
1819-1892
2
1822-1898
2
1837-1920
2
1860-1940
2
1876-1941
2
1879-1958
2
1880-1956
2
1883-1963
2
1888-1976
2
1891-
2
1891-1975
2
1891-1980
2
1892-1957
2
1933 - 1945
2
1933-1945
2
1945-
2
20e siècle
2
Since 1917
2
Since 1945
2
(1899-1961)
1
-1850
1
-1863
1
more ...