Region
Alaska
43
California
43
Texas
38
North America
35
United States
28
Utah
24
New Mexico
23
Colorado
22
West (U.S.)
22
Wyoming
19
Kansas
15
Nevada
15
Oregon
15
Idaho
13
China
12
Arizona
11
Arkansas
10
Montana
10
Great Basin
9
Mississippi
9
Mexico
8
South Dakota
8
'Eua Island
6
Maine
6
Maryland
6
New York (State)
6
North Carolina
6
Oklahoma
6
Panama
6
Tonga
6
Washington (State)
6
Baja California (Peninsula)
5
Canal Zone
5
Illinois
5
Kentucky
5
South America
5
Earth (Planet)
4
Europe
4
Florida
4
Gulf States
4
Nebraska
4
Tennessee
4
Antarctica
3
Arctic regions
3
British Columbia
3
Canada
3
Iowa
3
Japan
3
Louisiana
3
Marshall Islands
3
more ...