Era
Colonial period, ca. 1600-1775
21
20th century
20
Revolution, 1775-1783
18
19th century
16
18th century
14
Civil War, 1861-1865
9
1775-1865
8
1809-1865
5
1939-1945
5
To 1775
5
1706-1790
4
1732-1799
4
1805-1879
4
21st century
4
1644-1718
3
1674-1751
3
1743-1826
3
17th century
3
1804-1858
3
1810-1883
3
1814-1869
3
1860-1938
3
1861-1865
3
1882-1945
3
1900-1999
3
1918-
3
1933-
3
1946-
3
1954-
3
War of 1812
3
-1780
2
1590-1662
2
1600-1775
2
1685-approximately 1745
2
1702-1775
2
1712-1780
2
1713-1784
2
1729-1785
2
1730-1802
2
1732-1802
2
1732-1808
2
1736-1816
2
1737-1822
2
1741-1810
2
1743-1828
2
1745-1796
2
1746-1825
2
1749-1831
2
1751-1835
2
1752-1798
2
more ...