Era
1946-
36
1995-
14
2020
9
1959-
8
Revolution, 1775-1783
7
1960-
5
1972-
5
21st century
5
1890-1969
4
1957-
4
1961-
4
1963-
4
1967-
4
19th century
4
2021-
4
1778-1803
3
1929-1968
3
1954-
3
1956-
3
1964-
3
1968-
3
1970-
3
1974-
3
Civil War, 1861-1865
3
1732-1795
2
1735-1826
2
1805-1880
2
1809-1865
2
1947-
2
1948-
2
1955-
2
1965-
2
1966-
2
1967-1995
2
1973-
2
1977-
2
1978-
2
1981-
2
20th century
2
1737-1809
1
1779-1843
1
1794-1858
1
1809-1891
1
1818-1895
1
1838-1865
1
1875-1955
1
1888-1979
1
1893?-
1
1930-2023
1
1933-2020
1
more ...