Era
1775-1865
44
19th century
40
Civil War, 1861-1865
40
20th century
28
Revolution, 1775-1783
27
Colonial period, ca. 1600-1775
25
1865-1877
17
1861-1865
12
1865-1950
12
18th century
9
War of 1812
8
1865-
7
1857-1861
6
1865-1951
6
1918-
6
Civil War
6
1756-1818
5
1767-1845
5
1860
5
1863-1877
5
1900-1999
5
To 1964
5
1775-1783
4
1775-1783 (Révolution)
4
1789-1869
4
1815-1861
4
1852
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
To 1863
3
1732-1799
2
1734-1832
2
1742-1786
2
1783-1865
2
1789-1797
2
1798-1885
2
1800-1899
2
1806-1870
2
1807-1870
2
1808-1889
2
1809-1817
2
1809-1865
2
1811-1896
2
more ...