Era
To 1865
72
1865-1918
47
19th century
46
20th century
36
1960-1980
32
1918-1945
24
18th century
21
1933-1945
17
1945-
17
1980-
15
1783-1865
14
1918-1932
13
Civil War, 1861-1865
13
Jusqu'à 1865
12
Revolution, 1775-1783
12
Colonial period, ca. 1600-1775
9
1815-1861
8
1900-1999
7
19e siècle
7
20e siècle
7
1945-1989
6
1700-1799
5
1918-
5
1929
5
1945-1953
5
To 1775
5
1849-1861
4
18e siècle
4
1960-
4
To 1863
4
1706-1790
3
1775-1783
3
1789-1900
3
1809-1865
3
1813-1814
3
1849-1877
3
1865-1933
3
1885-1948
3
1919-1933
3
1940-1960
3
1964-1975
3
1975-
3
Since 1945
3
To 1900
3
1591-1643
2
1600-1775
2
1712-1794
2
1775-1865
2
1775-1899
2
1783-1850
2
more ...