Subject Region
United States
59
Canada
20
Latin America
13
Africa
12
China
12
Great Britain
7
Southeast Asia
7
Southern States
7
Asia
6
Japan
5
Middle East
5
Developing countries
4
East Asia
4
England
4
Korea
4
Mediterranean Region
4
Oceania
4
France
3
Germany
3
Israel
3
Pennsylvania
3
America
2
Caribbean Area
2
Europe
2
Foreign countries
2
Great Plains
2
Ireland
2
Ohio
2
Ohio River Valley
2
Philippines
2
Portugal
2
Russia (Federation)
2
Scotland
2
Southwest, New
2
Spain
2
West (U.S.)
2
Africa, Eastern
1
Africa, North
1
Africa, Northeast
1
Africa, West
1
Alabama
1
Appalachian Region, Southern
1
Arctic regions
1
Arizona
1
Atlantic Provinces
1
Australia
1
Austria
1
Brazil
1
Burma
1
Caribbean, English-speaking
1
more ...