Following its heyday as a global maritime power during the 15th and 16th centuries, Portugal lost much of its wealth and status with the destruction of Lisbon in a 1755 earthquake, occupation during the Napoleonic Wars, and the independence of Brazil, its wealthiest colony, in 1822. A 1910 revolution deposed the monarchy, and for most of the next six decades, repressive governments ran the country. In 1974, a left-wing military coup installed broad democratic reforms. The following year, Portugal granted independence to all of its African colonies. Portugal is a founding member of NATO and entered the EC (now the EU) in 1986.

Azores subject to severe earthquakes

volcanism: limited volcanic activity in the Azores Islands; Fayal or Faial (1,043 m) last erupted in 1958; most volcanoes have not erupted in centuries; historically active volcanoes include Agua de Pau, Furnas, Pico, Picos Volcanic System, San Jorge, Sete Cidades, and Terceira

Portugal has become a diversified and increasingly service-based economy since joining the European Community - the EU's predecessor - in 1986. Over the following two decades, successive governments privatized many state-controlled firms and liberalized key areas of the economy, including the financial and telecommunications sectors. The country joined the Economic and Monetary Union in 1999 and began circulating the euro on 1 January 2002 along with 11 other EU members.

The economy grew by more than the EU average for much of the 1990s, but the rate of growth slowed in 2001-08. After the global financial crisis in 2008, Portugal’s economy contracted in 2009 and fell into recession from 2011 to 2013, as the government implemented spending cuts and tax increases to comply with conditions of an EU-IMF financial rescue package, signed in May 2011. Portugal successfully exited its EU-IMF program in May 2014, and its economic recovery gained traction in 2015 because of strong exports and a rebound in private consumption. GDP growth accelerated in 2016, and probably reached 2.5 % in 2017. Unemployment remained high, at 9.7% in 2017, but has improved steadily since peaking at 18% in 2013.

The center-left minority Socialist government has unwound some unpopular austerity measures while managing to remain within most EU fiscal targets. The budget deficit fell from 11.2% of GDP in 2010 to 1.8% in 2017, the country’s lowest since democracy was restored in 1974, and surpassing the EU and IMF projections of 3%. Portugal exited the EU’s excessive deficit procedure in mid-2017.