Voting for Europe: Previous referendums
Accession to the European Communities: May 10th, 1972
Allowed the State to become a member of the EEC
The Single European Act: May 26th, 1987
Attempt to revise the Treaty of Rome, it deepened integration and set a deadline for the single market.
The Maastricht Treaty: June 18th, 1992
Began the process of a single currency, created European citizenship and a three-pillared European Union
Amsterdam Treaty : May 22nd, 1998
Provided for enlargement and increased EU role in home affairs.
Nice Treaty I: June 7th, 2001
Reformed decision making, revised voting powers , introduced a limit to commissioner numbers
Nice II: October 19th, 2002
The main difference was a prohibition on Ireland entering an EU-wide defence policy without constitutional amendment.
Lisbon Treaty I: June 12th, 2008
Aimed to centralise EU power, created a new post of president new powers for the parliament, and to harmonise legal systems.
Lisbon II : October 2nd, 2009
Ireland given guarantees that the treaty would not affect taxation, neutrality and the right to life.