Era
19th century
58
20th century
43
Civil War, 1861-1865
13
1809-1865
5
1888-1953
5
18th century
5
Revolution, 1775-1783
4
17th century
3
1843-1916
3
1899-1961
3
1945-1989
3
To 1775
3
1079-1142
2
16th century
2
1729-1797
2
1732-1799
2
1735-1826
2
1743-1826
2
1775-1783
2
1783-1809
2
1788-1824
2
1795-1821
2
1797-1851
2
1809-1847
2
1809-1849
2
1809-1882
2
1812-1870
2
1818-1882
2
1830-1894
2
1831-1894
2
1837-1920
2
1839-1906
2
1840-1902
2
1853-1890
2
1862-1934
2
1875-1926
2
1879-1955
2
1882-1945
2
1882-1971
2
1883-1966
2
1884-1972
2
1896-1940
2
1911-1979
2
1946-1976
2
Colonial period, ca. 1600-1775
2
approximately 1095-1163 or 1164
2
-1621
1
-1867
1
-1920
1
-1945
1
more ...