Era
Civil War, 1861-1865
1,114
Revolution, 1775-1783
850
Colonial period, ca. 1600-1775
483
Civil war
476
1775-1865
379
19th century
332
1732-1799
327
War of 1812
305
1809-1865
300
Revolution
291
1861-1865
260
Colonial period
178
1857-1861
153
1760-1789
135
1767-1845
127
1775-1783
125
18th century
120
1854-1861
116
1829-1837
114
1783-1865
105
1773-1841
97
Civil war, 1861-1865
94
1815-1861
89
To 1763 (New France)
87
1821-1861
81
1706-1790
76
To 1775
74
To 1846
73
1743-1826
71
1853-1857
71
1777-1852
65
1782-1852
64
1789-1797
64
1865-1869
64
1767-1848
61
17th century
61
French and Indian War, 1754-1763
61
1757-1834
60
1837-1841
58
1735-1826
52
1801-1809
50
Revolution, 1835-1836
50
To 1865
48
1789-1809
47
1841-1845
47
War with Mexico, 1845-1848
47
1845-1849
46
To 1803
46
1822-1885
44
1825-1829
44
more ...