Era
20th century
15
21st century
7
1918-1933
3
1979-
3
18th century
2
1945-1989
2
1969-1994
2
1980-
2
1997-
2
1775-1783
1
1806-1873
1
1818-1883
1
1864-1920
1
1868-1963
1
1871-1918
1
1893-1976
1
1898-1976
1
1918-1945
1
1945-
1
1951-1979
1
1953-1985
1
1959-
1
1969-
1
1970-
1
1979-1997
1
1982-
1
1989-
1
19th century
1
2007-
1
Bourbons, 1589-1789
1
Civil War, 1945-1949
1
Cultural Revolution, 1966-1976
1
Revolution, 1775-1783
1
Revolution, 1789-1799
1