Era
19th century
67
Civil War, 1861-1865
62
20th century
54
1775-1865
25
1900-1999
23
1800-1899
19
1861-1865
19
1865-1950
18
1865-
16
Revolution, 1775-1783
12
Colonial period, ca. 1600-1775
11
18th century
10
1865-1877
9
1900 - 1999
9
1800 - 1899
8
1845-1861
7
1850-1889
7
20e siècle
6
1800-1950
5
1865-1900
5
1933-1945
5
1800
4
1812-1883
4
1848-1908
4
1861-1877
4
1865-1898
4
1865-1945
4
1949-
4
19e siècle
4
Since 1865
4
1600-1775
3
1700-1899
3
1763-1829
3
1777-1852
3
1795-1849
3
1800-1999
3
1810-1885
3
1815-1861
3
1815-1868
3
1835-1930
3
1844
3
1861 - 1865
3
1863-1877
3
1897-1988
3
1914 - 1915
3
1914-1915
3
1918-
3
1933 - 1945
3
1951-
3
21st century
3
more ...