1957: Treaty of Rome identifies exchange rate policies as a "matter of common concern".
1969: Heads of state agree to economic and monetary union (Emu) by 1980.
1970: Pierre Werner, Prime Minister of Luxembourg, draws up Emu plans.
1972: Currencies linked through "monetary snake", which allows them to move against each other within defined limits.
1979: Snake replaced by European monetary system (EMS) based on exchange rate mechanism (ERM).
1989: Chancellor Kohl, President Mitterrand and Jacques Delors, President of European Commission, agree to implement Emu in three stages.
1990: Stage 1 begins with liberalisation of capital transactions.
1991: Maastricht treaty sets out path to single currency. Britain opts out.
1992: A run on overvalued pound forces John Major to take Britain out of ERM.
1994: Stage 2 begins with setting up of European Monetary Institute (EMI) as forerunner to European central bank (ECB).
1995: "Euro" agreed as currency name.
1998: EU Commission approves 11 countries for first wave of union. Greece follows two years later. ECB set up in Frankfurt.
1999: Euro comes into effect; ECB is responsible for monetary policy.
2000: ECB props up euro, which loses 30% of value against dollar. Danes vote against single currency.
2001: Final designs for euro notes and coins unveiled. Banks receive currency.
1 January 2002: The euro becomes legal tender in 12 countries.Reuse content