Treaty of peace, alliance and friendship agreed between King Philip V of Spain and the Duke of Savoy, by which the island and kingdom of Sicily were ceded to the Duke. Philip V secures for his house the succession to the Crown of Spain and the Indies. Concluded at the Congress of Utrecht on 13 July 1713 and ratified in Madrid on 4 August of the same year. Article IX (Great Britain gains economic advantages that end Spain's trade monopoly with its colonies). Collection of the Treaties of Peace, Alliance, Commerce adjusted by the Crown of Spain with the Foreign Powers (Coleccion de los Tratados de Paz, Alianza, Comercio ajustados por la Corona de Espana con las Potencias Extranjeras). Volume I. Madrid, 1796. Historical Military Library of Barcelona, Catalonia, Spain.