Subject Region
United States
2,657
Great Britain
39
Europe
37
Mexico
35
Massachusetts
34
Pennsylvania
26
Rhode Island
23
Canada
22
Southern States
22
Japan
18
Developing countries
15
New York (State)
15
California
14
China
11
North America
11
Connecticut
10
Philadelphia
10
Confederate States of America
9
Germany
8
Latin America
7
Mexican-American Border Region
7
Philadelphia (Pa.)
7
West (U.S.)
7
Albuquerque
6
European Union countries
6
Los Angeles
6
New Hampshire
6
New Mexico
6
New York
6
New York (N.Y.)
6
Caribbean Area
5
Cuba
5
Estados Unidos
5
France
5
Soviet Union
5
Texas
5
West Indies, British
5
America
4
Boston (Mass.)
4
Brazil
4
Central America
4
India
4
Italy
4
Maryland
4
South Carolina
4
Vietnam
4
Argentina
3
Asia
3
Great Plains
3
Guatemala
3
more ...