Subject Region
United States
259
England
92
Great Britain
76
California
45
Europe
42
West (U.S.)
41
Australia
37
China
37
Italy
37
France
27
Germany
25
New Mexico
25
New York (State)
24
Colorado
21
Middle West
20
Japan
19
Rome
19
Utah
18
Greece
17
Netherlands
16
Canada
15
New York
15
Spain
15
India
14
Southern States
14
Southwest, New
13
Texas
13
Ireland
11
Mediterranean Region
11
Mexico
11
America
10
New England
10
North America
10
Peru
9
Scotland
9
Belgium
8
Czech Republic
8
Illinois
8
Middle East
8
Pennsylvania
8
Turkey
8
Africa
7
Massachusetts
7
South Africa
7
Tanzania
7
Appalachian Region
6
Connecticut
6
Indiana
6
Latin America
6
Nevada
6
more ...