 Nevertheless, there were conflicts with the centre over trade and financial policy, and the Reapers' War of 1640–59 showed the "typical tendencies of Catalan separatism", when Catalonia sought the protection of France, then at war with Spain.During the War of the Spanish Succession, Catalonia largely supported the claim of the Archduke Charles.The victorious Bourbons soon outlawed many Catalan political and cultural institutions through the Nueva Planta decrees, and Castilian was introduced as official language.