Era
1775-1865
43
19th century
39
Civil War, 1861-1865
35
20th century
27
Colonial period, ca. 1600-1775
23
Revolution, 1775-1783
23
1865-1877
16
1865-1950
11
1861-1865
10
1865-
7
18th century
7
War of 1812
7
1857-1861
6
1865-1951
6
1918-
6
Civil War
6
1860
5
1863-1877
5
To 1964
5
1756-1818
4
1767-1845
4
1775-1783
4
1775-1783 (Révolution)
4
1789-1869
4
1815-1861
4
1900-1999
4
1951-
4
20e siècle
4
To 1775
4
1739-1823
3
1857
3
1861-1865 (Guerre de Sécession)
3
1865-1945
3
19e siècle
3
Siege, 1781
3
1732-1799
2
1742-1786
2
1783-1865
2
1798-1885
2
1800-1899
2
1806-1870
2
1809-1817
2
1812, Guerre de
2
1812-1815
2
1813
2
1823-1886
2
1845-1861
2
1853-1857
2
1865-1898
2
1865-1933
2
more ...