Kingdom of Aragon
Ferdinand the Catholic instituted the figure of the Viceroy, who would exercise the royal powers when the king was absent from the kingdom, something that would frequently happen with the monarchs of the House of Austria. The Viceroy was responsible for the Governor, who was in charge of maintaining order and social peace, and the Royal Audience, a court that would impart justice in serious or very important cases, or those that affected individuals with privileges. He also established the authority of the Inquisition in the kingdom, a body that later kings abused to circumvent the provisions of the Aragonese fueros, which did not prevail over the Inquisition, as occurred in the Alterations of Aragon.