Era
1783-1789
89
1775-1865
47
18th century
31
19th century
29
1861-1865
17
1751-1836
16
1946-
16
20th century
16
1775-1783
14
Revolution, 1775-1783
14
1809-1865
11
1783-1809
10
1800-1899
10
1787
9
Civil War, 1861-1865
8
1900-1999
7
1725-1792
6
1752-1816
6
21st century
6
1732-1799
5
1743-1826
5
1748-1826
5
Colonial period, ca. 1600-1775
5
Confederation, 1783-1789
5
1882-1945
4
1757-1804
3
1783-1865
3
1789-1797
3
2000-2099
3
2001-2009
3
1600-1799
2
1700-1799
2
1700-1899
2
1745-1829
2
1755-1835
2
1782-1850
2
1788
2
1789
2
1789-1809
2
1797-1801
2
1815-1900
2
1818-1895
2
1865-1877
2
1865-1900
2
1873-
2
1874-1948
2
1884-1972
2
1913-1994
2
1936-2004
2
1959-
2
more ...