The autonomy of Aragon, Valencia and Catalonia had been abolished in the 18th century by the Nueva Planta Decrees that created a centralised Spanish state. In the Basque Country, the kingdom status of Navarre and the separate status of Álava, Biscay, and Gipuzkoa were challenged in 1833 during the central government's one-sided territorial division of Spain. The resentment against the growing intervention of Madrid (e.g. attempts to take over Biscayan mines in 1826) and the loss of autonomy was considerably strong.