Era
20th century
255
19th century
186
Civil War, 1861-1865
94
To 1964
53
To 1863
48
18th century
40
Revolution, 1775-1783
40
1863-1877
34
1877-1964
33
1900-1999
31
1964-
29
1975-
28
1865-1950
27
1800-1899
25
1917-
25
19e siècle
25
20e siècle
23
Colonial period, ca. 1600-1775
20
1818-1895
16
1856-1915
15
1929-1968
15
1775-1865
14
1964-1975
14
1809-1865
13
1868-1963
13
1887-1940
13
Civil War
13
1861-1865
12
1951-
11
1865-1877
9
1898-1976
9
1766-1842
8
1812-1885
8
1821-1902
8
1945-1953
8
1753-1784
7
1864?-1943
7
1865-
7
1865-1898
7
1925-1965
7
1944-
7
1743-1826
6
1817?-1895
6
1839
6
1839-1871
6
1929
6
1945-
6
1984
6
To 1865
6
1760-1831
5
more ...