Era
19th century
779
20th century
45
21st century
26
1900-1999
15
1960-
11
2001-2010
11
1939-1945
9
1944-
8
1997-
7
2000-2099
7
2001-
6
1941-1950
5
1961-1970
5
1979-1997
5
1981-1990
5
1991-
5
1994-
5
2003-
5
1931-1940
4
1942-
4
1949-
4
1968-1991
4
1971-1980
4
1975-
4
1978-1989
4
2002-
4
Civil War, 1861-1865
4
Since 1994
4
1564-1616
3
1873-1925
3
1873-1968
3
1880-1935
3
1915-1987
3
1956-
3
1979-
3
1989-1994
3
1993-
3
2011-2020
3
Civil War, 1960-1965
3
Since 1960
3
Since 2001
3
1769-1821
2
1780-1838
2
1825-1904
2
1836-1909
2
1839-1876
2
1857-1938
2
1882-1946
2
18th century
2
1900-2000
2
more ...