Era
20th century
353
1900-1999
142
19th century
82
20e siècle
67
1929
65
1867-1957
58
21st century
53
2000-2099
38
1800-1899
31
21e siècle
27
1939-1945
21
1933-1945
20
Civil War, 1861-1865
20
20e siècle
19
19e siècle
16
1945-
13
1846-1950
11
2014
11
1832-1888
10
1950-
10
2011
10
21e siècle
10
1900 - 1999
9
2012
9
1775-1817
8
1865-
8
1918-1945
8
George V, 1910-1936
8
Revolution, 1775-1783
8
1861-1865
6
1891-1961
6
1930-1961
6
1945-1989
6
2013
6
Colonial period, ca. 1600-1775
6
German occupation, 1940-1945
6
1564-1616
5
1861-1865, Civil War
5
1898-1951
5
1914-1918
5
2001
5
2002
5
2005
5
Edward VII, 1901-1910
5
George VI, 1936-1952
5
Since 1945
5
1775-1865
4
1865-1950
4
18th century
4
1910-1936 (George V)
4
more ...