Era
20th century
26
1865-
16
18th century
12
19th century
12
Revolution, 1775-1783
12
Colonial period, ca. 1600-1775
11
1775-1783
9
1789-1797
9
1775-1865
8
Revolution
7
To 1775
6
1732-1799
5
1865-1950
5
1792-1864
4
1861-1865
4
1900-1999
4
1920-
4
1945-
4
1946-
4
21st century
4
1783-1789
3
1809-1817
3
1815-1861
3
1825-1829
3
1828
3
1869-1877
3
1920-1991
3
1740-1821
2
1797-1801
2
17th century
2
1904-
2
1921-
2
1933-1945
2
1933?-
2
1938-
2
1943-
2
1951-
2
1957-
2
2017-2021
2
b. 1837
2
1644-1718
1
1706-1790
1
1715-1783
1
1717-1784
1
1721-1775
1
1724-1792
1
1729?-1798
1
1731-1796
1
1732-1794
1
1734-1817
1
more ...