Romania profile - Timeline
A chronology of key events:
1600-1601 - The three historic principalities of Romania - Transylvania, Moldavia and Wallachia - are briefly united under one ruler, Michael the Brave. They had been under Habsburg and Ottoman domination.
1657 - Transylvania falls under Ottoman rule, as Moldavia and Wallachia had already done.
1683 - The Habsburgs recapture Transylvania from the Ottoman Empire.
1711 - The Habsburgs make Transylvania a province of their Kingdom of Hungary.
1715 - Phanariot Greek governors begin to rule Moldavia and Wallachia on behalf of the Ottoman Empire, and launch administrative reforms.
1821 - After a century of Russian military incursions, the Ottoman Empire cedes Bessarabia - the eastern half of Moldavia - to Moscow and allows Russia to oversee the administration of Moldavia and Wallachia. Phanariot rule ends, and native Romanian rulers steadily gain influence.
1834 - Moldavia and Wallachia adopt a unified basic constitution, the Reglamentul Organic, which provides for their eventual unification.
1856 - Russian control over Moldavia and Wallachia ends with Moscow's defeat in the Crimean War.
1859 - Prince Alexandru Ioan Cuza is proclaimed prince of both Moldavia and Wallachia.
1862 - The personal union of the two Danubian principalities is consolidated into a new state - Romania. Prince Cuza launches an ambitious policy of economic, political, military, educational and social reform, encompassing a parliament, land reform and the adoption of a civil code.
1866 - Landed interests and disgruntled liberal politicians force the increasingly authoritarian Prince Cuza's abdication. Parliament invites the German prince Karl of Hohenzollern-Sigmaringen to succeed him.
1877-1878 - Romania wins full independence from the Ottoman Empire by siding with Russia in the Russo-Turkish War. It also acquires a coastline on the Danube delta.
1881 - Romania becomes a kingdom. Romanians in the Hungarian province of Transylvania form a National Party to campaign for their rights, but meet with repression by the Hungarian authorities.
1904 - The Romanian oil industry takes off with the opening of the first refinery.
1907 - Mass revolt by poor peasants bloodily crushed.
1914 - King Carol's death ends Romania's alliance with the Central Powers - Germany and Austria. His nephew Ferdinand takes Romania into World War I on the Allied side in 1916.
1918 - As part of the peace settlement at the end of the war, Romania acquires several territories with resident Romanian populations - virtually doubling in size and population.
1930s - Rise of fascist "Iron Guard" mass movement.
1938 - King Carol II establishes dictatorship.
1940 - Romania cedes territory to Hungary and USSR after signing of German-Soviet pact. General Ion Antonescu forces King Carol to abdicate in favour of son Michael, but assumes power himself.
1941 - Romania fights on German side against Soviet Union.
1944 - Antonescu ousted. Romania switches sides as Soviet forces close in.
1945 - Soviet-backed government installed.
1947 - Romania regains Transylvania under peace treaty but loses territory to Soviet Union. King Michael abdicates. Romanian People's Republic proclaimed.
1948-49 - Soviet-style constitution, purges of dissidents in the Communist Party.
1952 - Party leader Gheorghe Gheorghiu-Dej becomes prime minister.
1965 - Nicolae Ceausescu becomes Communist Party leader after death of Gheorghe Gheorghiu-Dej. He pursues foreign policy that often runs counter to Moscow's lead, while increasing repressive rule and personality cult at home.
1968 - Ceausescu denounces Soviet invasion of Czechoslovakia.
1975 - United States grants Romania most-favoured-nation status.
1977 - Bucharest earthquake kills around 1,500 people.
1985-86 - Austerity programme aimed at reducing foreign debt leads to food shortages and widespread power cuts.
1987 - Army occupies power plants and crushes workers' demonstrations in Brasov.
1989 December - Demonstrations in city of Timisoara against the harassment of dissident priest Laszlo Tokes trigger bloody national uprising.
Ceausescu and his wife Elena try to flee but are caught and executed.
National Salvation Front established, headed by former Ceausescu ally Ion Iliescu.
1990 May - Government of Prime Minister Petre Roman embarks on economic and political reform programme.
June - Student and opposition protests against ex-communist leadership crushed when 20,000 miners are brought in to stage a counter demonstration.
1991 - Riots by miners on strike over soaring prices force Mr Roman's resignation. He is replaced by Theodor Stolojan, who sees through a new constitution.
1996 - Centre-right election victory sweeps aside former communists. Emil Constantinescu elected president, Victor Ciorbea becomes prime minister.
1997 - Economic reform programme announced. Securitate Communist-era secret police files opened.
1999 January - Security forces prevent 10,000 miners striking over pay from entering Bucharest.
2000 November-December - Ion Iliescu defeats far-right rival Corneliu Vadim Tudor to retake presidency. Leftist Adrian Nastase becomes prime minister in minority government.
2001 January - Parliament approves a law aimed at returning to its original owners property nationalised during the Communist era.
Path to EU membership
2003 October - Referendum approves constitution to bring Romania into line with European Union membership.
2004 March - Romania admitted to Nato.
2004 October - President Iliescu ends decades of denial by admitting Romanian complicity in Nazi-driven Holocaust when hundreds of thousands of Jews and Gypsies were sent to their deaths by the country's fascist leadership.
2004 November-December - Centrist alliance leader Traian Basescu elected president. Ally Calin Tariceanu becomes prime minister with agenda of speeding up EU-oriented reforms.
2005 April - Romania signs EU accession treaty.
2005 December - US Secretary of State Condoleezza Rice visits, signs agreement which will allow US to use Romanian military bases.
2007 January - Romania and Bulgaria join the European Union, raising the EU membership to 27.
2007 May - President Basescu survives a parliamentary bid to impeach him when he wins the backing of voters in a referendum.
2008 February - European Commission warns Romania over high-level corruption, pointing to slow pace of investigations into activities of eight serving or former ministers. It gives the country six months to correct serious failings or face sanctions.
2008 December - Democratic Liberal Party President and Mayor of Cluj-Napoca Emil Boc forms coalition government, following inconclusive general elections in November.
2009 March - The International Monetary Fund and other lenders agree to provide Romania a rescue package worth 20bn euros.
2009 December - President Traian Basescu re-elected. Emil Boc forms new coalition government.
2010 May-June - Austerity measures including large-scale cuts to public sector wages and pensions lead to wave of strikes and protests.
2010 December - France and Germany block Romania from joining Schengen passport-free zone, saying it still needs to make "irreversible progress" in fight against corruption and organised crime.
2012 January-February - Clashes over austerity and corruption prompt resignation of Prime Minister Emil Boc. 2012 May - Victor Ponta becomes prime minister when his left-wing Social Liberal Union alliance topples the interim government in confidence vote. Seeks to soften austerity terms, begins campaign to oust President Basescu.
2012 July - President Basescu survives impeachment referendum, as it fails to reach the minimum turnout figure.
2012 December - Victor Ponta wins parliamentary elections.
Social Democrats wane and wax
2014 January - Transitional curbs on Romanians' right to work and receive benefits in some EU members in place since Romania joined in 2007 lapse.
2014 November - Conservative Klaus Iohannis beats Victor Ponta in presidential run-off election.
2015 May - Government minister Liviu Dragnea receives suspended sentence for election fraud, which he denies. He becomes Social Democratic Party leader later in the year.
2015 June - Prosecutors in high-level corruption investigation question Prime Minister Victor Ponta on suspicion of forgery, tax evasion and money laundering, prompting President Iohannis to demand his resignation.
2015 November - Victor Ponta resigns as prime minister after months of scandal, culminating in mass street protests over lax safety regulations at a nightclub where 32 people died in a fire.
2016 May - A Nato missile defence system is installed in the face of Russia opposition.
2017 January - Sorin Grindeanu appointed prime minister after Social Democrats win December 2016 elections. Seeks to form coalition with Alliance of Liberals and Democrats.2017 February - Some 200,000 people protest over government attempts to water down corruption measures, in largest demonstrations since fall of Communist regime in 1989.