Columbia subject headings:
Latin America--Commerce--Spain--History.
Spain--Commerce--Latin America--History.
Harvard subject headings:
Europe--Commerce--History--Congresses.
Latin America--Commerce--History--16th century--Congresses.
Latin America--Commerce--History--17th century--Congresses.
Latin America--Commerce--History--18th century--Congresses.
Spain--Commerce--History--Congresses.
Princeton subject headings:
Latin America--Commerce--History.