Era
20th century
137
19th century
61
1900-1999
49
20e siècle
44
1939-1945
31
1800-1899
30
Civil War, 1861-1865
21
1933-1945
20
1929
19
1564-1616
18
1945-
17
19e siècle
15
1918-1945
11
1946-
11
1919-1933
10
1948-
10
1809-1865
9
1869-1948
9
1889-1945
9
1882-1945
8
1933-
8
1947-
8
1533-1603
7
1856-1924
7
1929-1968
7
Revolution, 1775-1783
7
Since 1900
7
Since 1945
7
Stephen, 1135-1154
7
1732-1799
6
1861-1865
6
1913-1980
6
1913-1995
6
1945-1975
6
1960-1980
6
1961-1975
6
21st century
6
Colonial period, ca. 1600-1775
6
1769-1821
5
1860-1890
5
1861-1865 (Guerre de Sécession)
5
18th century
5
1917-1963
5
1926-2016
5
1928-
5
1930-
5
1945-1970
5
1961-1969
5
1971-
5
1992
5
more ...