Era
20th century
35
1960-1980
14
19th century
14
21st century
9
17th century
6
1945-1989
6
18th century
4
1945-
4
1946-
4
Revolution, 1775-1783
4
1609-
2
1775-1783
2
1800-1837
2
1812-1870
2
1865-1950
2
1878-1967
2
1909-1972
2
1912-1945
2
1929
2
1961-1969
2
1991-
2
2017-2021
2
Civil War, 1642-1649
2
Early modern, 1500-1700
2
-1669
1
1588-1667
1
1621-1678
1
1642-1660
1
1660-1688
1
16th century
1
1729-1797
1
1750-1814
1
1773-1835
1
1775-1865
1
1788-1824
1
1792-1822
1
1797-1874
1
1800-1859
1
1801-1917
1
1811-1848
1
1813-1865
1
1813-1877
1
1814-1876
1
1818-1895
1
1844-1900
1
1844-1910
1
1873-1934
1
1879-1962
1
1882-1960
1
1884-1968
1
more ...