Era
20th century
1,476
19th century
1,149
1900-1999
474
18th century
348
17th century
269
21st century
264
1800-1899
258
Middle Ages, 500-1500
225
Civil War, 1861-1865
217
To 1500
178
16th century
175
2000-2099
106
Renaissance, 1450-1600
103
1800-1999
101
1564-1616
90
Early modern, 1500-1700
85
1700-1799
84
Revolution, 1775-1783
63
1939-1945
54
To 500
52
Colonial period, ca. 1600-1775
48
Modern period, 1600-
42
500-1500
40
Medieval, 500-1500
36
1945-
33
Middle English, 1100-1500
32
1861-1865
30
1600-1699
29
Middle Ages, 600-1500
29
1991-
28
Revolution, 1789-1799
27
1700-1899
24
1820-1906
24
1980-
24
1989-
24
1865-1918
23
1933-1945
23
-1400
20
1900 - 1999
19
1775-1783
18
1882-1941
18
1918-1945
18
1918-1933
17
1500-1700
16
Early modern and Elizabethan, 1500-1600
16
1450-1600
15
1500-1599
15
1812-1870
15
1815-1902
15
1843-1916
15
more ...