Subject
Economics
26
Health
22
World history
17
Language arts
16
Women's studies
16
United States History
14
International relations
12
Macroeconomics
12
U.S. states Politics and government
11
American literature
10
Education
10
Environmental sciences
10
Sociology
10
War
10
World politics
10
Asia
9
Criminology
9
Technological innovations
9
Technological innovations History
9
Women employees
9
Africa South of the Sahara
8
Crime
8
Schools
8
Social institutions
8
African Americans History
7
Business
7
Latin Americans
7
Middle East History
7
Music and dance
7
Social service Sociological aspects
7
Technology
7
Air Pollution
6
Art and architecture
6
Climatic changes
6
Equality
6
Global warming
6
Pollution
6
Teaching
6
Africa History
5
Courts
5
Indians of North America History
5
Justice, Administration of
5
Microeconomics
5
Africa
4
Human geography
4
Medical care
4
Political science
4
Public policy (Law)
4
Sex
4
Substance abuse
4
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