Era
20th century
79
1950-
33
1961-1970
33
21st century
29
1991-2000
22
19th century
22
1971-1980
17
1951-1960
15
1981-1990
15
1875-1965
14
18th century
13
1921-1930
9
1931-1940
9
1981-2001
9
476-1492
9
To 1500
9
2001-2010
8
17th century
7
1941-1950
7
1564-1616
6
16th century
6
1867-1932
6
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
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
Revolution, 1775-1783
3
To 476
3
1631-1700
2
1706-1790
2
1717-1797
2
1732-1799
2
1736-1818
2
1779-1869
2
1794-1877
2
more ...