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Expanded History

History of Portugal

From antiquity to the modern era — the historical eras, key events, and narrative that shaped Portugal.

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Overview

THE HISTORY OF PORTUGAL can be divided into seven broad periods. The first begins in the Paleolithic period and extends to the formation of Portugal as an independent monarchy. During this period, Lusitania, that portion of the western Iberian Peninsula known today as Portugal, experienced many waves of conquest and settlement by Iberos, Phoenicians, Greeks, Romans, Swabians, Visigoths, and Muslims. Of these successive waves of people, the Romans left the greatest imprint on present Portuguese society. The second broad period of Portuguese history runs from the founding of the monarchy in 1128 until the disappearance of the House of Burgundy, Portugal’s first dynasty, in 1383. During this period, the monarchy was established and expanded by reconquering territory from the Muslims and populating those lands with Christian settlers. Consolidation and economic development were furthered by policies designed to increase agricultural productivity. The third period begins with the founding of the House of Avis, Portugal’s second ruling dynasty. During this period, Portugal experienced a dynastic struggle that brought the House of Avis to the throne, a series of wars with Castile that threatened the independence of the new kingdom, a social revolution, a second dynastic struggle, and the assertion of royal supremacy over the nobility. The fourth period begins in 1415 when the Portuguese seized Ceuta in Morocco, thus beginning Portugal’s maritime expansion. During this period, Portugal explored the west coast of Africa, discovered and colonized Madeira and the Azores, opened the passage to India around Africa, built an empire in Asia, and colonized Brazil. The fifth period, that of imperial decline, begins with the dynastic crisis of 1580, which saw the demise of the House of Avis. During this period, Portugal was part of the Iberian Union until 1640, when the monarchy was restored and a new dynasty, the House of Bragança, was established. This period includes the advent of absolutism in Portugal and ends with the Napoleonic invasions in the early 1800s. The sixth, the period of constitutional monarchy, begins with the liberal revolution of 1820, which established in Portugal for the first time a written constitution. This period includes a civil war in which constitutionalists triumphed over absolutists, the winning of independence by Brazil, and the exploration of Portugal’s African possessions. It ends with the collapse of rotativismo in the early twentieth century. The final period begins in 1910 with the downfall of the monarchy and the establishment of the First Republic. This period includes the corporative republic of António de Oliveira Salazar; the collapse of that regime on April 25, 1974; and the establishment of Portugal’s present democratic regime, the Second Republic.

Historical Eras

The major periods of {country}’s history at a glance.

  1. Pre-Kingdom Lusitania

    800 BCE – 1128

    The western Iberian Peninsula experienced successive waves of settlement and conquest by Phoenicians, Greeks, Celts, Romans, Visigoths, and Moors. Roman rule left the most enduring cultural and linguistic imprint, laying foundations for the Portuguese language and legal tradition. The Moorish period beginning in 711 was gradually reversed by Christian reconquest under Leonese and later local lords.

  2. House of Burgundy

    1128 – 1383

    Afonso Henriques established Portugal as an independent monarchy, winning recognition from Castile and the papacy by the mid-twelfth century. The dynasty steadily expanded southward through the Reconquista, culminating in Afonso III's capture of Faro from the Moors in 1249. King Dinis later promoted agricultural development, founded the University of Lisbon, and secured stable borders with Castile by treaty in 1297.

  3. House of Avis & Empire

    1383 – 1580

    João I founded the House of Avis following a dynastic crisis and decisive victory over Castile at Aljubarrota in 1385. Under Prince Henry the Navigator and his successors, Portugal pioneered Atlantic exploration — colonizing Madeira and the Azores, mapping the African coast, and opening the sea route to India when Vasco da Gama reached Calicut in 1498. The colonization of Brazil from 1500 and the building of a vast Asian trading empire made Portugal the foremost maritime power of the sixteenth century.

  4. Iberian Union & Bragança

    1580 – 1820

    A dynastic crisis brought Portugal under Spanish rule as the Iberian Union from 1580 to 1640, during which overseas territories suffered under combined Iberian-Dutch rivalry. The House of Bragança restored independence in 1640, though Portugal faced prolonged war with Spain before securing recognition. The era culminated in catastrophe with the 1755 Lisbon earthquake and French Napoleonic occupation from 1807, which forced the royal court to flee to Brazil.

  5. Constitutional Monarchy

    1820 – 1910

    A liberal revolution in 1820 introduced Portugal's first written constitution, triggering a civil war between constitutionalists and absolutists that ended in liberal victory by 1834. Brazil declared independence in 1822, stripping Portugal of its most valuable colony and accelerating economic decline. The late nineteenth century was marked by the rotativismo system of alternating party rule, growing instability, and renewed but contested engagement with Portugal's African territories.

  6. Republic & Dictatorship

    1910 – 1974

    The monarchy was overthrown in 1910, but the First Republic proved unstable, yielding to a military coup in 1926. António de Oliveira Salazar then built the Estado Novo, a corporatist authoritarian regime that endured for decades through censorship, a secret police, and costly colonial wars in Africa. The "Carnation Revolution" of April 25, 1974 — a left-wing military coup — peacefully ended the dictatorship and set Portugal on the path to democracy.

  7. Democratic Portugal

    1974 – present

    Following the 1974 revolution, Portugal rapidly decolonized all its African territories and adopted a democratic constitution in 1976, establishing the Second Republic. The country joined NATO as a founding member and acceded to the European Community in 1986, anchoring itself in Western institutions and undergoing rapid modernization. Despite economic crises — including a severe sovereign debt crisis requiring an international bailout in 2011 — Portugal has remained a stable parliamentary democracy.

Timeline Preview

The first 7 key events. View the full chronology on the timeline page.

  1. 416

    Portugal was ruled by the Visigoths.

    Portugal was ruled by the Visigoths.

  2. 711

    Portugal was ruled by the Arabs (Moors).

    Portugal was ruled by the Arabs (Moors).

  3. 739

    Portugal was ruled by the Leonese.

    Portugal was ruled by the Leonese.

  4. 905

    Navarre becomes a kingdom.

    Navarre becomes a kingdom.

  5. 1035

    King Sancho III of Navarre, Aragon and Castile dies and his lands become separate Kingdoms.

    King Sancho III of Navarre, Aragon and Castile dies and his lands become separate Kingdoms.

  6. 1095

    The time of the Crusades.

    The time of the Crusades. The Crusaders assist the Portuguese in defeating the Moors.

  7. 1112

    Afonso inherits the County of Portugal, a province of Castile.

    Afonso inherits the County of Portugal, a province of Castile.