Nueva Planta decrees

Effects

The decrees effectively created a centralized Spanish state and Spanish citizenship by abolishing all legal distinctions between the Castilians and the Aragonese, Catalans, Valencians and Majorcans. One of the main goals of the decrees was the replacement of the administrative and public law of each entity of the Crown of Aragon. The consequence was the abolition of the political institutions that they developed over the previous centuries, including their representative and legislative bodies, the Courts of Aragon, the Courts of Catalonia and the Courts of Valencia. From that point on, the members of the abolished Courts were summoned to the Cortes of Castile, now operating as the unified Cortes of Spain, except in Navarra.

The decrees erased all internal borders and tariffs except for the Basque territory and granted all citizens of the newly created Spanish state the right to trade with the American and Asian colonies, which henceforth were no longer the exclusive domain of the Crown of Castile.

The top civil servants were to be appointed directly from Madrid, and most institutions in what had become subnational entities were abolished. Court cases could also be presented and argued only in Castilian, which became the sole language of government and displaced Latin, Catalan and the other languages of Spain. However, the application of Castilian as a single administrative language had one exception in the Vizcaya Chamber of the Valladolid Court, where the use of Basque was permitted.

Catalonia

The fourth decree, which affected the Principality of Catalonia, was issued on October 9, 1715, and dispatched by Royal Decree from January 16, 1716.

• It abolished the Generalitat of Catalonia, the General Court of Catalonia, the Consell de Cent of Barcelona, the Conference of the Three Commons and the Court of Contraventions, as well as most of the traditional royal officers of the Principality.
• Furthermore, the viceroy was replaced by a Captain General, and Catalonia was divided into twelve corregimientos, like Castile, replacing the traditional vegueries, although the local batlles (sheriffs) were maintained.
• The Royal Audience of Catalonia became the highest body of the Principality, from which the Captain General of Catalonia, appointed by the king, would rule without the previous formal limitations and counterbalances, thus ensuring the application of the new absolutist system.
• The Royal Audience of Catalonia lost its previous status as supreme court, becoming a territorial court subject to the Council of Castile, which was given the power to be a court of last instance.
• The mayors and members of the local councils from the corregimiento's capitals would be directly chosen by the king. Additionally, the until then strict mechanisms of fiscalization of the local councils were eliminated.
• The sometents (popular militias of Catalonia) were banned.
• The cadastre was established, taxing urban and rural properties, the benefits of labor, commerce, and industry, suddenly multiplying the tax burden in the Principality (already devastated after the war) sevenfold.
• Catalan was replaced as the administrative language of the Royal Audience by Spanish.
• The six Catalan universities (including the University of Barcelona) were closed, being replaced by a royal university in the town of Cervera.

The decree maintained Catalan private, criminal, and mercantile law, as well as the Consulate of the Sea, however, without its own legislative body, Catalan criminal and mercantile laws gradually became obsolete and were eroded by various royal ordinances throughout the 18th century. It did not affect the political-administrative regime of the Aran Valley due to the Querimonia, which is why it was not incorporated into the new corregedorias into which the Principality of Catalonia was divided. The Valleys of Andorra also avoided the application of Nueva Planta primarily due to the Bishop of Urgell, Simeó de Guinda, who convinced the new Bourbon authorities that Andorra had always been neutral and unrelated to the Principality of Catalonia, resulting in the definitive political separation of Andorra from Catalonia. Currently, the pre-1716 Catalan private law still exists, modernized and codified via the Civil Code of Catalonia.

While theoretically the replacement of Catalan by the Spanish language solely affected the Royal Audience, the king provided with secret instructions to the newly appointed royal officers in Catalan territory to progressively enforce the use of Spanish: they "will take the utmost care to introduce the Castilian [Spanish] language, for which purpose he will give the most temperate and disguised measures so that the effect is achieved, without the care being noticed."