Region
Africa
1
Africa, East
2
America
1
Andhra Pradesh
1
Canada
2
Chile
1
Developing countries
1
Europe
1
Europe, Northern
2
Great Britain
1
History
1
India
2
Jequetepeque River Valley
3
Jequetepeque River Valley (Peru)
3
Kilimanjaro Region (Tanzania)
1
Meru, Mount (Tanzania)
1
Middle East
1
North America
4
Northeastern States
1
Northwest Coast of North America
1
Peru
3
Southern States
1
Tanzania
1
United States
21
West Virginia
1