Era
20th century
121
1564-1616
38
19th century
38
21st century
34
1929
21
1945-1953
17
1953-1961
17
1901-1953
10
Civil War, 1861-1865
9
17th century
6
1863-1938
6
1921-1997
6
18th century
5
Victoria, 1837-1901
5
16th century
4
1809-1882
4
1937-
4
1969
4
Revolution, 1775-1783
4
1783-1865
3
1809-1865
3
1818-1883
3
1859-1952
3
1879-1955
3
1896-1934
3
1896-1980
3
1944-
3
1946-
3
2017
3
2023
3
1608-1674
2
1694-1778
2
1743-1826
2
1751-1836
2
1789-1809
2
1812-1870
2
1819-1892
2
1829-1909
2
1830-1886
2
1835-1910
2
1860-1904
2
1879-1958
2
1882-1941
2
1888-1965
2
1889-1935
2
1889-1976
2
1891-1955
2
1918-1990
2
1939-
2
1950-
2
more ...