Era
20th century
326
19th century
173
18th century
72
1755-1835
64
1946-
60
2005
60
1913-1994
55
To 1500
55
2006
54
17th century
53
1841-1935
51
2004
50
1948-
47
1856-1941
43
2003
43
1900-1999
42
Colonial period, ca. 1600-1775
41
20e siècle
36
1886-1971
34
1945-1989
31
1947-
31
Civil War, 1861-1865
31
1882-1965
30
1891-1974
30
1933-1945
30
21st century
30
1908-1993
29
1918-1961
29
1924-2005
29
2001-2009
29
1751-1836
28
1945-
24
2001
24
Revolution, 1775-1783
24
1857-1938
23
2002
23
16th century
22
1930-
22
1971-1981
22
1989-
21
1748-1832
20
1888-1927
20
1891-1927
20
1898-1980
20
1777-1864
19
1907-1995
19
1980-
19
1800-1899
18
1809-1865
18
1809-1858
17
more ...