Era
20th century
1,570
19th century
1,513
Civil War, 1861-1865
1,507
1900-1999
1,105
1800-1899
1,026
1861-1865
899
18th century
400
Revolution, 1775-1783
371
1775-1783
232
21st century
225
Colonial period, ca. 1600-1775
213
1809-1865
187
1700-1799
150
1945-1989
149
Since 1900
138
2000-2099
105
1783-1865
104
1933-1945
97
1800-1999
95
1775-1865
88
War of 1812
85
17th century
84
1600-1775
82
1700-1899
79
1989-
72
1945-
71
1815-1861
67
To 1865
64
1945-1953
61
1946-
58
1800 - 1899
57
1600-1799
56
To 1899
52
1732-1799
51
To 1863
50
1812-1815
48
1877-1964
48
1865-1877
47
1900-2099
47
1743-1826
46
1863-1877
44
1865-1950
44
1865-1918
43
1953-1961
43
1929-1968
42
1900 - 1999
40
1882-1945
39
16th century
38
1918-1945
38
1818-1895
37
more ...