Era
20th century
26
21st century
12
19th century
10
1980-
9
Civil War, 1936-1939
7
1945-1989
6
1989-
6
16th century
5
17th century
5
18th century
5
1939-1975
5
1974-
5
1931-1939
4
1910-1946
3
1920-1970
3
1975-1982
3
1982-
3
1988-
3
2001-2009
3
House of Austria, 1516-1700
3
1516-1700
2
1517-1648
2
1621-1665
2
1648-1715
2
1889-1945
2
1892-1975
2
1917-1963
2
1975-
2
1979-
2
1991-
2
2001-
2
2009-
2
Napoleonic Conquest, 1808-1813
2
Revolution, 1910-1920
2
Spanish dynasty, 1580-1640
2
-1154
1
1447-1565
1
1492-1648
1
1516-1830
1
1547-1559
1
1561-1622
1
1566-1799
1
1584-1648
1
1598-1621
1
1599-1658
1
1600-1659
1
1603-1688
1
1648-1714
1
1648-1789
1
1649-1721
1
more ...