Era
20th century
1,199
19th century
612
1900-1999
476
21st century
251
18th century
161
1800-1899
151
2000-2099
125
1945-
105
17th century
94
Colonial period, ca. 1600-1775
67
Revolution, 1775-1783
65
1859-1952
64
1933-1945
62
1800-1999
61
16th century
57
To 1500
52
1564-1616
49
1865-1918
48
1896-1980
45
1918-1961
45
Civil War, 1861-1865
44
1921-1997
43
1918-1945
39
1865-1921
38
1743-1826
37
1946-
33
1700-1799
31
1896-1934
30
1783-1865
28
1929
28
1856-1915
26
1980-
24
1900-2099
23
1900 - 1999
22
Since 2020
22
121-180
21
1700-1899
20
To 1964
19
1926-1984
18
Medieval, 500-1500
18
-1780
17
1913-1994
17
1951-
17
1732-1799
16
1989-
16
1945-1989
15
1600-1699
14
1775-1783
14
1801-1890
14
1882-1945
14
more ...