Era
20th century
402
19th century
173
1900-1999
146
21st century
76
1800-1899
60
1939-1945
60
Civil War, 1861-1865
51
18th century
47
1564-1616
43
1856-1939
40
2000-2099
36
Early modern, 1500-1700
28
1875-1961
26
1933-1945
25
1901-1981
23
17th century
20
1945-
17
1800-1999
15
1946-
15
To 1500
15
1770-1850
14
1608-1674
13
16th century
13
1700-1799
13
1772-1834
11
1970-
11
1980-
11
1882-1941
10
1949-
10
1889-1945
9
1900 - 1999
9
1969-
9
1989-
9
2003-2011
9
Revolution, 1789-1799
9
Since 2020
9
1900-2099
8
1914-1918
8
1975-
8
1990-
8
2001-2009
8
Bombardment, 1945
8
Since 1900
8
1564-1593
7
1700-1899
7
1795-1821
7
1844-1889
7
1861-1865
7
1993-
7
-1400
6
more ...