Merindad is a Castilian or Spanish Medieval administrative term that refers to a country subdivision smaller than a province but larger than a municipality. There are two Names given to the Spanish language: Spanish ( español) and Castilian ( castellano) Country subdivision refers to the division of a Country 's territory for the sake of its administration, description or other such purpose A province is a territorial unit almost always an Administrative division. A municipality is an administrative entity composed of a clearly defined territory and its population and commonly denotes a City, Town, or Village, or It can roughly approximate the English county or bayliff. English is a West Germanic language originating in England and is the First language for most people in the United Kingdom, the United States A county is a Land area of Regional Government within a larger State. The officer in charge was called Merino which may be related or not to the sheep race of the same name. The Merino is the most economically influential breed of sheep in the world prized for its Wool. It was used in the kingdoms of Castile and Navarre. Kingdom of Castile was one of the medieval kingdoms of the Iberian Peninsula. The Kingdom of Navarre (Reino de Navarra Nafarroako Erresuma Royaume de Navarre originally the Kingdom of Pamplona, was a European kingdom which occupied lands on either Connected to the birth of Castile the Merindades of the province of Burgos were part of the creation of the administrative division by Pedro I and still use this term. Located in the north of the province of Burgos, the Merindades are the birth place of the name "Castilla" Currently the Foral Community of Navarre keeps the merindad as a historical division. Administratively they have been substituted by the partido judicial. In Biscay, the mancomunidades comarcales keep the place of the old merindades, such as Duranguesado. Population Of the 1133444 people who live in Biscay about 35% live in the capital Bilbao and 88% in its metropolitan area.