Era
20th century
68
19th century
19
21st century
14
1564-1616
12
Civil War, 1861-1865
7
Early modern, 1500-1700
6
18th century
4
-1400
3
1812-1870
3
1897-1962
3
1933-1945
3
1945-
3
1945-1989
3
1960-
3
To 332 B.C.
3
1608-1674
2
1770-1827
2
1809-1865
2
1882-1941
2
1917-1963
2
Colonial period, ca. 1600-1775
2
Old English, ca. 450-1100
2
Revolution, 1775-1783
2
Revolution, 1789-1799
2
1268-1559
1
1492-1648
1
1559-1789
1
1632-1704
1
1648-1789
1
1664-1729
1
1696-1786
1
1755-1835
1
1757-1827
1
1775-1783
1
1783-1789
1
1789-
1
1789-1815
1
1789-1900
1
17th century
1
1811-1863
1
1812-1889
1
1815-1861
1
1818-1883
1
1819-1880
1
1819-1891
1
1821-1881
1
1828-1906
1
1832-1920
1
1835-1910
1
1842-1907
1
more ...