Era
1775-1865
54
1775-1783
40
19th century
34
Revolution, 1775-1783
29
1783-1809
25
1865-1950
22
1815-1861
21
Civil War, 1861-1865
20
1861-1865
17
20th century
17
To 1775
15
18th century
14
1809-1865
13
1757-1804
12
1783-1865
10
1933-1945
10
1767-1845
9
1791-1868
9
1735-1826
8
1857-1861
8
1865-1900
8
1732-1799
7
1743-1826
7
1783-1789
7
Colonial period, ca. 1600-1775
7
1706-1790
6
1945-1953
6
1951-
6
1760-1820
5
1783-1815
5
1789-1797
5
1792-1864
5
1849-1877
5
Constitutional period, 1789-1809
5
To 1865
5
1644-1718
4
1756-1836
4
1782-1852
4
1829-1837
4
1829-1906
4
1865-
4
1865-1933
4
1882-1947
4
1898-1951
4
1989-
4
21st century
4
1732-1808
3
1742-1798
3
1746-1813
3
1751-1836
3
more ...