Era
20th century
12
Civil War, 1936-1939
7
17th century
5
19th century
5
16th century
4
18th century
4
1931-1939
4
1939-1975
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
1975-
2
1975-1982
2
1982-
2
21st century
2
Spanish dynasty, 1580-1640
2
1447-1565
1
1547-1559
1
1561-1622
1
1566-1799
1
1584-1648
1
1598-1621
1
1599-1658
1
1603-1688
1
1648-1714
1
1649-1721
1
1655-1724
1
1665-1700
1
1710-1789
1
1759-1788
1
1865-1898
1
1868-1912
1
1868-1918
1
1868-1931
1
1885-1969
1
1886-1931
1
1889-1970
1
1893-1986
1
1898-1935
1
1931-
1
1933-1974
1
1939-1945
1
1945-1989
1
1947-
1
1962-
1
1974-1977
1
more ...