Subject
United States Commerce History
19
Power (Social sciences)
18
United States Economic conditions
18
United States Territorial expansion
18
Indians of North America History
4
United States Politics and government
3
African Americans History
2
Emigration and immigration
2
Immigrants
2
Imperialism History
2
Industrialization
2
Labor History
2
West (U.S.) History
2
Christianity
1
Civil law
1
Courts
1
Criminal law
1
Democracy
1
Deviant behavior
1
Ethnicity
1
Gold miners
1
History
1
Legislation
1
Pleasant Hill (Ky.)
1
Race discrimination
1
Reconstruction (U.S. history, 1865-1877)
1
Religions History
1
San Antonio, Texas
1
Social control
1
United States History
1
United States History, Naval
1