Era
20th century
8,879
19th century
4,379
18th century
1,357
21st century
987
17th century
789
1945-
641
16th century
421
Early modern, 1500-1700
345
1933-1945
315
1564-1616
229
1918-1933
183
1918-1945
170
20TH CENTURY
155
History
152
Revolution, 1789-1799
140
Victoria, 1837-1901
133
Early modern and Elizabethan, 1500-1600
113
1989-
112
1990-
111
1945-1989
102
1789-1900
94
19TH CENTURY
89
British occupation, 1765-1947
85
Civil War, 1936-1939
85
Unification, 1990
85
1837-1901
84
1871-1918
84
Colonial period, ca. 1600-1775
79
Revolution, 1775-1783
78
1882-1941
76
Revolution, 1917-1921
75
1917-1936
72
1945-1990
70
Middle English, 1100-1500
69
German occupation, 1940-1945
65
Civil War, 1861-1865
64
1936-1945
62
To 1500
61
1910-1936
56
Stuarts, 1603-1714
55
Tudors, 1485-1603
52
1812-1870
51
1949-
46
1960-
46
1971-
45
476-1492
45
Medieval period, 1066-1485
45
1878-1953
44
Medieval, 500-1500
44
1991-
43
more ...