Columbia subject headings:
Portugal--Foreign relations--Spain.
Portugal--History--Period of discoveries, 1385-1580--Exhibitions.
Spain--Foreign relations--Portugal.
Spain--History--Ferdinand and Isabella, 1479-1516--Exhibitions.
Tratado de Tordesillas--Exhibitions.
Harvard subject headings:
Princeton subject headings:
Portugal--Foreign relations--Spain.
Portugal--History--Period of discoveries, 1385-1580--Exhibitions.
Portugal. Treaties, etc. 1494 June 7--Exhibitions.
Spain--Foreign relations--Portugal.
Spain--History--Ferdinand and Isabella, 1479-1516--Exhibitions.