Era
21st century
6
2000-
3
1976-2000
2
20th century
2
1756-1791
1
1770-1827
1
1813-1883
1
1860-1911
1
1878-1953
1
1893-1976
1
1906-1975
1
1911-1986
1
1926-
1
1935-
1
1939-1945
1
1949-1976
1
1951-
1
1964-
1
1968-
1
1975-1979
1
73 B.C.-4 B.C.
1
Civil War, 1945-1949
1
Republic, 1912-1949
1
Since 1976
1
active 6th century B.C.
1