Olivença
Question of Olivença Prior to the Peninsular War and French Invasions, France's allied Spain annexed Olivenza following the War of Oranges in 1801, and since then this Portuguese territory has passed into the hands of the Spanish In 1817 Spain recognized Portuguese sovereignty over Olivenza, thanks to the Congress of Vienna in 1815 (which aimed to reorganize the European borders, altered by the achievements of Napoleon), as is the case of Olivenza according to this document Olivença should belong to Portugal . Spain undertook to return the territory, as soon as possible, but this has never happened Picture 1- Map of Olivença in yellow Picture 2- Olivença