Other
Slavery
Law and legislation
3
Afro-Americana
2
Compromise of 1850
2
Extension to the territories
2
Justification
2
Petition, Right of
2
Political aspects
2
Slave trade
2
%SP3
1
Economic conditions
1
Emancipation
1
Enslaved persons
1
Foreign relations
1
Missouri compromise
1
Politics and government
1
Population
1
Speeches in Congress
1
Territorial expansion
1
Territories and possessions
1