Era
19th century
12
20th century
9
Civil War, 1861-1865
7
1760-1789
6
1861-1865
6
1775-1865
5
1829-1837
4
1865-1869
4
1925-1964
4
Revolution, 1775-1783
4
1767-1845
3
1775-1783
3
1783-1865
3
1923-2011
3
1945-
3
21st century
3
Revolution
3
War of 1812
3
1254-1323?
2
1564-1616
2
1743-1826
2
1783-1850
2
1817-1825
2
1825-1829
2
1826
2
1834
2
1859-1937
2
1865-1950
2
18th century
2
1900 - 1999
2
1900-1999
2
1948-1983
2
1950-
2
2000-2099
2
Colonial period, ca. 1600-1775
2
To 1900
2
1037-1101
1
1056-1121
1
1336-1405
1
1469-1524
1
1547-1616
1
1548-1600
1
1562-1635
1
1603-1714
1
1622-1673
1
1688-1815
1
1697-1763
1
16th century
1
1709-1784
1
1723-1790
1
more ...