Era
20th century
80
1991-2000
51
1961-1970
48
1950-
33
21st century
29
1981-1990
27
1951-1960
26
1971-1980
25
19th century
24
18th century
22
2001-2010
18
1875-1965
14
1921-1930
13
1931-1940
12
17th century
10
1941-1950
10
1981-2001
10
476-1492
9
To 1500
9
16th century
8
1867-1932
6
1564-1616
5
1839-1937
5
1969-1974
5
-1935
4
1863-1947
4
1905-1976
4
Medieval, 500-1500
4
Middle Ages, 500-1500
4
Middle Ages, 600-1500
4
-approximately 1540
3
1412-1431
3
1631-1700
3
1732-1799
3
1749-1832
3
1788-1824
3
1794-1827
3
1830-1899
3
1836-1909
3
1842-1910
3
1843-1916
3
1848-1892
3
1875-1938
3
1945-
3
1980-2020
3
1989-
3
2001-2009
3
Civil War, 1861-1865
3
Middle English, 1100-1500
3
Revolution, 1775-1783
3
more ...