Portugal's borders froze after the Algarve fell in 1249
Afonso Henriques proclaimed himself king in 1139 after Portugal split from Galicia in 1095. The Algarve was taken from Muslim rule in 1249, Lisbon became capital in 1255, and the land frontier has barely moved since—then a globe-spanning Age of Discovery empire briefly remade Portugal’s place in the world.
Humans reached the region about 400,000 years ago; the Aroeira 3 Homo heidelbergensis skull is Portugal’s oldest human fossil. Neanderthals left traces; Homo sapiens arrived around 35,000 years ago. Pre-Celtic and Celtic peoples—Gallaeci, Lusitanians, Celtici, Cynetes—shared the land with Phoenician-Carthaginian coastal posts. Rome seized Iberia from Carthage in the Second Punic War era, renaming Cale as Portus Cale within Gallaecia. After Rome, Suebi centered on Braga and Visigoths ruled until the Umayyad conquest of 711–716 created Al-Andalus.
Fifteenth- and sixteenth-century exploration raised Portugal to world-power rank during Europe's Age of Discovery as it built a vast overseas empire. Decline signals include the 1578 Moroccan disaster at Alcácer Quibir that killed King Sebastian and ransomed much of the high nobility, a sixty-year dynastic union with Spain from 1580 until John IV's 1640 restoration war, the 1755 Lisbon earthquake, Napoleonic occupation, and Brazil's independence in 1822. From the mid-nineteenth century to the late 1950s nearly two million Portuguese emigrated to Brazil and the United States.
A 1910 revolution ended the monarchy; a 1926 military coup installed a dictatorship lasting until the 1974 coup, after which democracy returned and African colonies gained independence in 1975. Portugal helped found NATO, the OECD, EFTA, and the Community of Portuguese Language Countries, and later entered the European Economic Community. Castro culture archaeology and Roman chroniclers such as Strabo color the pre-Roman north as hillfort societies; Lusitanians held the inland center that became the Roman province of Lusitania in the south.
Source: History of Portugal
