Era
19th century
65
To 1865
65
20th century
55
1865-1918
38
1960-1980
30
18th century
29
To 1964
23
1975-
20
Civil War, 1861-1865
20
1933-1945
18
1918-1945
16
1945-
16
1980-
15
Revolution, 1775-1783
15
1783-1865
13
20e siècle
11
1918-1932
10
Colonial period, ca. 1600-1775
10
Jusqu'à 1865
10
1964-1975
9
1815-1861
8
1900-1999
8
19e siècle
7
1917-
6
To 1775
6
1700-1799
5
1800-1899
5
1929
5
1945-1989
5
1964-
5
1865-1933
4
18e siècle
4
1918-
4
1945-1953
4
1960-
4
To 1863
4
1775-1783
3
17th century
3
1818-1895
3
1849-1861
3
1849-1877
3
1865-1900
3
1865-1945
3
1914-
3
1919-1933
3
1948-
3
1600-1775
2
1706-1790
2
1775-1865
2
1783-1850
2
more ...