Region
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Denver
3
Egypt
3
Europe, Eastern
3
Greece
3
Italy
3
London
3
Maine
3
Michigan
3
Minnesota
3
North America
3
Papua New Guinea
3
Philadelphia (Pa.)
3
Seattle
3
South Carolina
3
Spain
3
Utah
3
Africa, North
2
Africa, Sub-Saharan
2
Algeria
2
America
2
Arizona
2
Boston
2
Brooklyn (New York, N.Y.)
2
Chaco Canyon (N.M.)
2
Chicago (Ill.)
2
Cincinnati
2
Cleveland
2
Confederate States of America
2
Daly City
2
Europe, Central
2
Ghana
2
Iran
2
Kanawha County
2
Kentucky
2
Mexico City
2
Middle East
2
New England
2
New Haven (Conn.)
2
New Mexico
2
New York (N.Y.)
2
Oklahoma
2
Oregon
2
Punjab
2
Russia
2
South America
2
Southwest, New
2
Tambora, Mount (Indonesia)
2
Vermont
2
Virginia
2
Washington (D.C.)
2
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