Region
United States
883
West (U.S.)
69
New Mexico
34
North America
33
Canada
31
Europe
20
Mexico
20
California
19
Earth (Planet)
19
Southern States
19
Southwestern States
19
Wyoming
18
Texas
17
Arizona
16
Australia
15
Utah
15
China
14
Soviet Union
14
Colorado
12
Japan
12
Developing countries
11
Northeastern States
11
Rocky Mountains
11
Africa
10
Caribbean Area
10
Middle East
10
Rocky Mountains Region
10
Great Lakes (North America)
9
New England
9
America
8
Antarctica
8
Arctic regions
8
Asia
8
Great Britain
8
Latin America
8
Southwest, New
8
British Columbia
7
Colorado Plateau
7
Galveston Bay
7
Alaska
6
Idaho
6
Mexico, Gulf of
6
Northwest, Pacific
6
Pacific Area
6
Tropics
6
East (U.S.)
5
Greece
5
India
5
Massachusetts
5
Southeast Asia
5
more ...