Era
Revolution, 1775-1783
20
19th century
19
1725-1807
15
1809-1865
10
1732-1799
9
1775-1783
9
Civil War, 1861-1865
7
1690-1768
6
1831-1881
6
Revolution
6
1775-1783 (Révolution)
5
1850
5
1828-1903
4
1834-1892
4
1839-1905
4
18th century
4
1929-1968
4
20th century
4
Colonial period, ca. 1600-1775
4
1611-1648
3
1644-1718
3
1735-1814
3
1762-1824
3
1788-1850
3
1826-1908
3
1829
3
1225?-1274
2
1483-1546
2
1491-1557
2
1651-1719
2
1653-
2
1653-1727
2
1653-approximately 1725
2
1679-1735
2
1690-1
2
1706-1790
2
1723-1795
2
1734-1806
2
1739-1799
2
1748-1779
2
1754-1815
2
1774-1860
2
1775-1865
2
1791-1841
2
1793-1866
2
1799-1852
2
1800-1899
2
1800?-1831
2
1820-1909
2
1843-1925
2
more ...