Era
20th century
610
19th century
158
21st century
83
1564-1616
82
17th century
74
1929
60
Civil War, 1861-1865
54
1901-1953
53
16th century
51
1933-1945
47
18th century
44
1945-1953
41
1945-1989
41
1953-1961
41
1961-1969
35
1969-
32
1937-
28
1969
25
Early modern, 1500-1700
20
1783-1865
18
1935-
18
1945-1955
18
Revolution, 1775-1783
17
Middle English, 1100-1500
14
1889-1945
13
1929-1968
12
1955-1965
12
1926-
11
1939-1945
11
1946-
11
1951-
11
1809-1849
10
1882-1945
10
1928-
10
1936-
10
1452-1519
9
1809-1882
9
1879-1955
9
1939-
9
1944-
9
1835-1910
8
1879-1953
8
1882-1941
8
1955-
8
Early accounts to 1600
8
1828-1906
7
1938-2005
7
Civil War, 1936-1939
7
active 6th century B.C.
7
1685-1750
6
more ...