Columbia subject headings:
Brazil--Discovery and exploration--Portuguese.
Brazil--History--1500-1548.
Castile (Spain)--History--16th century.
Portugal--Foreign relations--Spain.
Spain--Foreign relations--Portugal.
Tratado de Tordesillas--History.
Harvard subject headings:
America--Historical geography.
Brazil--Discovery and exploration--Spanish.
Spaniards--Brazil--History--16th century.
Princeton subject headings: