Era
19th century
43
20th century
31
21st century
11
1800-1899
8
1835-1910
6
1784
5
1786-1787
5
Civil War, 1861-1865
5
1650?-1730
4
1669?-1762
4
1900-1999
4
1900-2099
4
1946-
4
1786-1836
3
1817-1862
3
1970-
3
2017-
3
1706-1790
2
1732
2
1790-1870
2
1834-1867
2
1840
2
1867-1936
2
1879-1935
2
1971-
2
1980-
2
1993-2001
2
2000-2099
2
2001-2009
2
Colonial period, ca. 1600-1775
2
Revolution, 1775-1783
2
Revolutionary period, 1775-1783
2
Since 1971
2
1564-1616
1
1775
1
1775-1783
1
1783-1850
1
1783-1865
1
1790
1
1800-1850
1
1809-1865
1
1810
1
1813-1886
1
1814-1852
1
1815-1862
1
1820-1887
1
1837-1920
1
1839
1
1841
1
1856-1926
1
more ...