Region
United States
417
Great Britain
11
Southern States
5
Study and teaching (Elementary)
5
Europe
4
New York (State)
4
États-Unis
4
America
3
Confederate States of America
3
Washington (D.C.)
3
Alabama
2
Asia
2
Canada
2
Case studies
2
Census,1940
2
China
2
Economic aspects
2
Education
2
Foreign relations
2
France
2
History
2
Illinois
2
Iraq
2
Japan
2
Latin America
2
Research
2
Soviet Union
2
Spain
2
Tennessee
2
Vietnam
2
Ability testing
1
Attica
1
Audiences
1
Baltimore
1
Biography
1
Birmingham
1
Border States (U.S. Civil War)
1
Brooklyn (New York, N.Y.)
1
Brown County (Ind.)
1
Camp Forrest
1
Camp Forrest (Tenn.)
1
Cananda
1
Certification
1
Chicago
1
Cuba
1
Deregulation
1
Developing countries
1
Education (Secondary)
1
Employment
1
England
1
more ...