Era
Civil War, 1861-1865
145
19th century
89
1800-1899
29
1775-1865
21
1861-1865
15
1865-1950
9
1823-1886
6
1807-1870
5
20th century
5
1775-1899
4
1800 - 1899
4
1865-
4
1865-1877
4
1825-1915
3
1848-1849
3
1865-1945
3
1775 - 1877
2
1808-1889
2
1813-1868
2
1816-1882
2
1821-1904
2
1828-1862
2
1833-1887
2
1845-1861
2
1861-1877
2
1865-1918
2
1918-
2
1951-
2
To 1865
2
1775 - 1865
1
1775 - 1899
1
1806-1864
1
1808-1892
1
1811-1884
1
1814-1863
1
1815-1885
1
1818-1867
1
1821-1877
1
1839-1914
1
1843-1913
1
1857-1861
1
1861-1922
1
1861-1950
1
1861-1999
1
1865-1898
1
1865-1900
1
1870-1937
1
Revolution, 1775-1783
1
Since 1775
1
Since 1800
1
more ...