Columbia subject headings:
Europe--Foreign relations--Spain.
Spain--Foreign relations--Europe.
Spain--Politics and government--1516-1700.
Harvard subject headings:
Europe--Foreign relations--Spain.
Spain--Foreign relations--Europe.
Spain--Politics and government--1516-1700.
Princeton subject headings:
Charles V, Holy Roman Emperor, 1500-1558.
Europe--History.
Monarchy--Spain--History.
Philip II, King of Spain, 1527-1598.
Spain--Politics and government--1516-1700.