Era
19th century
93
20th century
49
1865-1945
33
Civil War, 1861-1865
25
1775-1865
20
1918-
19
1865-1950
15
1945-
15
1951-
14
1865-1877
12
18th century
12
1865-1951
11
1865-
9
19e siècle
7
20e siècle
6
1863-1877
4
1900-1999
4
21st century
4
Colonial period, ca. 1600-1775
4
17th century
3
1800-1899
3
1865-1918
3
1865-1933
3
1884-1954
3
1964-1975
3
Since 1918
3
1783-1865
2
1800 - 1899
2
1822-1903
2
1835-1930
2
1856-1915
2
1865-1999
2
1884-1956
2
1902-1981
2
1903-1942
2
1920-1980
2
1933-1945
2
1960-1980
2
Since 1945
2
To 1775
2
To 1964
2
1621-1683
1
16th century
1
1700-1899
1
1732-1799
1
1800-1945
1
1809-1865
1
1812-1883
1
1822-1885, USMA 1843
1
1840-1889
1
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