Era
20th century
76
19th century
32
21st century
20
1564-1616
19
18th century
11
1933-1945
8
1945-
7
17th century
6
1961-1970
6
Julio-Claudians, 30 B.C.-68 A.D.
6
10 B.C.-54 A.D.
5
1889-1945
5
1917-1963
5
1941-
5
1959-1990
5
1969-
5
Civil War, 1861-1865
5
Civil War, 1994
5
1874-1965
4
1929-1994
4
1944-
4
1947-
4
1951-
4
1959-
4
1977-
4
1367-1413
3
1387-1422
3
1483-1546
3
1491-1547
3
1770-1827
3
1879-1970
3
1905-1976
3
1906-1975
3
1919-1933
3
1927-1987
3
1928-
3
1942-
3
1945-1989
3
1946-
3
1949-
3
1954-
3
1958-
3
1975-1979
3
1991-2000
3
2001-2009
3
Revolution, 1917-1921
3
-30 B.C.
2
-approximately 1540
2
1133-1189
2
13th century
2
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