Era
1775-1865
54
1775-1783
38
19th century
38
Revolution, 1775-1783
27
1783-1809
25
1815-1861
21
1865-1950
21
Civil War, 1861-1865
21
1861-1865
18
20th century
18
To 1775
15
1809-1865
13
1757-1804
12
18th century
12
1918-1945
12
1783-1865
10
1767-1845
9
1791-1868
9
1735-1826
8
1857-1861
8
1865-1900
8
1933-1945
8
1743-1826
7
1706-1790
6
1732-1799
6
1783-1789
6
1945-1953
6
1951-
6
Colonial period, ca. 1600-1775
6
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
1760-1820
4
1782-1852
4
1789-1815
4
1800-1899
4
1829-1837
4
1829-1906
4
1865-1933
4
1874-1944
4
1882-1947
4
1898-1951
4
1900-1999
4
1989-
4
1732-1808
3
more ...