Historical Period
1945-
108
21st century
55
1918-1945
44
20th century
41
To 1492
26
1989-
17
19th century
15
18th century
10
17th century
9
476-1492
9
16th century
8
To 1500
8
1929
7
Medieval, 500-1500
7
1933-1945
5
1789-1900
4
1919-1933
4
Since 1945
4
1492-
3
1600-1750
3
1882-1945
3
To 1865
3
1648-1715
2
1981-1989
2
1981-1993
2
Empire, 30 B.C.-476 A.D.
2
Middle Ages, 500-1500
2
1268-1559
1
1492-1648
1
14th century
1
1500-1558
1
15th century
1
1603-1714
1
1644-1912
1
1750-1918
1
1815-1848
1
1871-1918
1
1900-1999
1
1900-2099
1
1914-1980
1
1918-1933
1
1930-2012
1
1943 Nov. 14-
1
1945-1971
1
1945-1989
1
1960-
1
1971-1981
1
1990-
1
1993-
1
2002-
1
more ...