Columbia subject headings:
Harvard subject headings:
Castile (Spain)--History.
Castile (Spain)--Politics and government.
Consensus (Social sciences)--Iberian Peninsula--History--To 1500.
Iberian Peninsula--Politics and government--To 1500.
Political culture--Iberian Peninsula--History--To 1500.
Spain--Foreign relations--Treaties.
Princeton subject headings:
Castile (Spain)--History.
Consensus (Social sciences)--Iberian Peninsula--History--To 1500.
Iberian Peninsula--Politics and government--To 1500.
Political culture--Iberian Peninsula--History--To 1500.
Spain--Foreign relations--Treaties.