Cyfnod
20th century
73
19th century
23
1973-1988
18
Coup d'état, 1973
12
1824-1920
10
1908-1973
10
1970-1973
10
21st century
8
1565-1810
7
War of Independence, 1810-1824
7
1920-1970
6
1988-
6
1810-
3
1810-1824
3
To 1810
3
16th century
2
17th century
2
1840-1891
2
1876-1924
2
1973-
2
1981-1990
2
Revolution, 1891
2
To 1565
2
War with Spain, 1865-1866
2
1560-1609
1
1561-1642
1
1754-1841
1
1769-1825
1
1781-1862
1
1781-1865
1
1785-1818
1
1820-1905
1
1829-1919
1
1866-1928
1
1885-1969
1
1898-1980
1
18th century
1
1904-1973
1
1907-1999
1
1918-1970
1
1926-2011
1
1932-
1
1936-1974
1
1939-2004
1
1954-
1
1970-
1
1971-1980
1
1973- 1983
1
Civil War, 1936-1939
1
February Revolution, 1848
1
rhagor ...