Region
United States
19
Mexico
5
China
4
Great Britain
4
Latin America
3
Alaska
2
America
2
England
2
Europe
2
France
2
Iran
2
Italy
2
Middle East
2
Southern States
2
Washington (D.C.)
2
Albania
1
Argentina
1
Arkansas
1
Austin (Tex.)
1
Austria
1
Belgium
1
Chicama River Valley
1
Chicama River Valley (Peru)
1
Denmark
1
Germany
1
Greece
1
Huaca Prieta Site (Peru)
1
Japan
1
Korea
1
Louisiana
1
Manchuria (China)
1
Mediterranean Region
1
Mexican-American Border Region
1
Netherlands
1
New Orleans
1
New Orleans (La.)
1
Norway
1
Paris
1
Peru
1
Philadelphia (Pa.)
1
Southwestern States
1
Spain
1
Texas
1
Tibet Autonomous Region
1
Tibet Autonomous Region (China)
1
West (U.S.)
1
Wyoming
1
Yemen (Republic)
1
Yemen, North
1
Yemen, South
1