Era
20th century
83
19th century
46
17th century
15
16th century
14
18th century
14
Civil War, 1861-1865
9
1945-
4
21st century
4
To 1500
4
1450-1600
3
1743-1826
3
1819-1891
3
1843-1916
3
1873-1947
3
1897-1962
3
1917-1963
3
1933-1945
3
400-1450
3
Revolution, 1775-1783
3
-1400
2
1564-1616
2
1789-1900
2
1809-1865
2
1817-1862
2
1863-1951
2
1874-1963
2
1884-1972
2
1888-1953
2
1899-1961
2
1902-1968
2
1911-1983
2
1917-
2
1926-2005
2
1945-1953
2
1945-1989
2
1958-
2
Early modern and Elizabethan, 1500-1600
2
Early modern, 1500-1700
2
To 1848
2
To 1900
2
To 400
2
World War, 1939-1945
2
approximately 1422-1491 or 1492
2
1397?-1468
1
1588-1679
1
15th and 16th centuries
1
15th century
1
1608-1674
1
1633-1703
1
1661?-1731
1
more ...