Era
1945-
4
1945-1989
3
20th century
3
1856-1924
2
1949-
2
1985-1991
2
1989-
2
19th century
2
356 B.C.-323 B.C.
2
World War, 1939-1945
2
1333-1600
1
1556-1648
1
1568-1600
1
1638-1715
1
1648-1795
1
1650-1702
1
1800-1950
1
1848-
1
1868-
1
1868-1912
1
1869-1948
1
1871-1918
1
1889-1964
1
1904-1986
1
1912-1945
1
1912-1949
1
1913-1921
1
1958-
1
1975-1985
1
1976-2002
1
1980-
1
1997-
1
Civil War, 1936-1939
1
Coup d'état, 1965
1
Korean War, 1950-1953
1
Macedonian Expansion, 359-323 B.C.
1
Period of civil wars, 1480-1603
1
Revolution, 1917-1921
1
Soviet occupation, 1979-1989
1
Victoria, 1837-1901
1