Era
20th century
154
19th century
73
1900-1999
67
17th century
37
21st century
37
18th century
27
1904-1990
22
16th century
21
1800-1899
19
To 1500
19
2000-2099
18
1934-
15
1945-
14
1946-
14
1856-1939
9
1973-
9
1980-
9
1993-2001
9
1913-2007
8
1700-1799
7
Early modern, 1500-1700
7
1500-1699
6
1800-1999
6
1960-1980
6
1975-
6
1854-1900
5
1882-1941
5
1894-1956
5
1918-1945
5
1925-
5
1935-
5
1954-2014
5
1600-1699
4
1809-1882
4
1865-1933
4
1875-1961
4
1896-1980
4
1900 - 1999
4
1959-
4
1989-
4
Allied occupation, 1945-1952
4
Civil War, 1861-1865
4
Middle Ages, 600-1500
4
Middle English, 1100-1500
4
Since 1945
4
To 1775
4
-1400
3
1500-1700
3
1566-1625
3
1865-1918
3
more ...