Portugal is the oldest state in the Iberian Peninsula and one of the oldest in Europe, its territory having been continuously settled, invaded and fought over since prehistoric times. The Pre-Celts, Celts, Carthaginians and Romans were followed by the invasions of the Visigoths and Suebi Germanic peoples. Portugal as a country was established during the Christian Reconquista against the Moors who had invaded the Iberian Peninsula in 711 AD. Despite attempts at independence since its foundation as a county in 868, only after the Battle of São Mamede, where Portuguese forces led by Afonso Henriques defeated forces led by his mother, Theresa of Portugal, the County of Portugal affirmed its sovereignty and Afonso Henriques styled himself Prince of Portugal. He would later be proclaimed King of Portugal at the Battle of Ourique in 1139 and was recognised as such by neighbouring kingdoms in 1143.
In the 15th and 16th centuries, Portugal established the first global empire, becoming one of the world 's major economic, political and military powers. During this period, today referred to as the Age of Discovery, Portuguese explorers pioneered maritime exploration, notably under royal patronage of Prince Henry the Navigator and King John II, with such notable voyages as Bartolomeu Dias' sailing beyond the Cape of Good Hope (1488), Vasco da Gama's discovery of the sea route to India (1497–98) and the European discovery of Brazil (1500). During this time, Portugal monopolized the spice trade, and the empire expanded with military campaigns in Asia.
