Era
20th century
934
19th century
493
1900-1999
450
21st century
350
18th century
229
17th century
198
1800-1899
185
2000-2099
173
To 1500
132
1700-1799
85
16th century
80
1800-1999
78
1945-
78
Colonial period, ca. 1600-1775
74
Civil War, 1861-1865
69
1564-1616
65
1939-1945
59
Early modern, 1500-1700
54
1989-
53
Revolution, 1775-1783
48
1900-2099
45
Since 1945
42
1933-1945
41
Since 1900
37
1775-1865
36
Middle Ages, 600-1500
36
1600-1775
35
1724-1804
32
1600-1699
31
Civil War, 1642-1649
31
Since 1989
30
1674-1748
29
1775-1783
29
1991-
29
600-1500
26
1817-1862
25
1960-
24
Middle English, 1100-1500
24
2001-2009
23
1500-1700
22
1861-1865
22
1800
21
2000-
21
1700-1899
20
1945-1989
20
Since 1991
20
Since 2000
19
2009-
18
30-600
18
1600-1799
17
more ...