evidence: Oliventine Portuguese[1] (also known as Portuguese from Olivença)[2] is the dialectal variety of the Portuguese language natively spoken in the disputed municipalities of Olivença and Táliga, in Extremadura (Spain). Currently, the Portuguese of Olivença and Táliga is not recognized by Spain, which has administered this territory since the War of the Oranges in 1801. Portugal, however, does not recognize Spanish sovereignty over the region and claims it as its own.[3][4] [...] Olivença and Táliga in the Kingdom of Portugal [edit]During the Reconquista, the lands that today form the territories of Olivença and Táliga were ceded to Portugal by the Treaty of Alcañices, in 1297, along with many other localities. King Denis had taken advantage of the weak Castilian political position to annex and retake several territories.[10] [...] Olivença and Táliga in Spain [edit]After the War of the Oranges, Portugal lost Olivença and Táliga. Although Portugal claims that Spain lost them at the Congress of Vienna, Spain continues to administer the territory. Portuguese remained the vehicular and mother tongue of the region's inhabitants until the middle of the 20th century, when it began to wane, a victim of the Hispanicization policies of Francoism and the educational system, since the latter did not teach Portuguese. Currently, the language is taught but only as a foreign language.[12]