Administrative divisions of Portugal (on Terceira Island), the historical and cultural capital, is the home of the Azorean judiciary and seat of the Diocese of the Azores. Madeira is an archipelago that includes two principal islands, Madeira and Porto Santo, plus two uninhabited natural group of islands, the Desertas and Savage Islands (). The archipelago is located closer to Africa than Europe, is highly commercial and urbanized; its regional capital (Funchal) is developmentally comparable to urban centers in the Canary or Balearic Islands. The division of the Portuguese territory is established in title eight (Título VIII) of the Portuguese constitution: granting local authority to
Madeira or East Indies. To prevent the wine from spoiling, neutral grape spirits were added. However, wine producers of Madeira discovered, when an unsold shipment of wine returned to the islands after a round trip, that the flavour of the wine had been transformed by exposure to heat and movement. Today, Madeira is noted for its unique winemaking process which involves heating the wine and deliberately exposing the wine to some levels of oxidation. Most countries limit the use of the term "Madeira" to those wines that come from the Madeira Islands, to which the European Union grants Protected Designation of