Era
19th century
9
20th century
6
1812-1870
3
1862-1900
3
1888-1953
3
1971-
3
1577-1640
2
18th century
2
1951-
2
1578-1644
1
1605-1665
1
1759-1851
1
1765-1838
1
1771-1855
1
1789-1851
1
1792-1822
1
17th century
1
1800-1890
1
1803-1844
1
1819-1900
1
1823-1893
1
1835-1910
1
1843-1916
1
1848-1860
1
1850-1894
1
1850-1950
1
1862-1937
1
1878-1917
1
1885-1930
1
1889-1963
1
1896-1975
1
1904-1991
1
1908-
1
1932-
1
1939-
1
1945-
1
1945-1970
1
1947-
1
1952-
1
1954-
1
1960-1980
1
1967-
1
1970-
1
1973-
1
1979-
1
1990-
1
Coup d' etat, 1973
1
Early modern, 1500-1700
1
Sahara
1
To 1848
1
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