Era
20th century
1,955
19th century
763
21st century
615
1564-1616
272
1946-
272
Civil War, 1861-1865
203
1945-
153
17th century
125
1933-1945
125
1981-1989
123
2011-2020
119
18th century
118
1900-1999
118
2009-
118
Revolution, 1775-1783
111
1812-1870
109
2001-2010
103
1952-
102
1948-
97
Colonial period, ca. 1600-1775
95
1963-1969
93
1913-1994
86
1917-1963
79
1944-
74
1961-1969
74
1929-1968
73
1941-
72
1918-1945
68
1942-
68
1951-
68
1882-1945
66
1889-1945
66
1935-
66
1926-
65
1955-
63
1908-1973
60
1929
60
1960-
60
1993-
55
1947-
54
1930-
53
1964-
53
1969-
53
1980-
53
To 1863
53
1966-
51
1800-1859
50
1865-1877
50
1943-
50
1991-2000
50
more ...