Era
20th century
836
19th century
526
21st century
168
1991-2000
119
18th century
96
17th century
78
1900-1999
70
1564-1616
68
Colonial period, ca. 1600-1775
64
1963-1969
59
1812-1870
58
1961-1969
53
1945-
51
1800-1859
48
1946-
48
Civil War, 1861-1865
48
1800-1899
46
Revolution, 1775-1783
45
1933-1945
44
To 1863
43
1865-1877
42
1845-1861
41
To 1500
38
1865-1918
36
2001-2010
36
2011-2020
35
1865-1921
34
1918-1945
34
1941-1955
31
1800-1999
27
1981-1990
26
1937-
24
1952-
24
1783-1865
22
1805-1879
21
1951-
21
16th century
20
1934-
20
1955-
20
1941-
19
1949-
19
1971-1980
19
1908-1973
18
1944-
18
1951-1960
18
1864?-1943
17
1942-
17
2000-
17
1928-
16
1929
16
more ...