The Maastricht Treaty was signed on February 7, 1992, in the city of Maastricht, Netherlands.

The Maastricht Treaty's primary goal was to establish a common currency for Europe, known as the euro.

The original signatories to the Maastricht Treaty were France, Germany, Italy, and the Netherlands.

The Maastricht Treaty established four convergence criteria for countries to join the EU: a budget deficit below 3% of GDP, a public debt below 60% of GDP, an inflation rate below 2%, and a long-term interest rate below 3%.

The euro came into circulation on January 1, 2002, in 12 EU member states.

The Maastricht Treaty strengthened the EU's political and economic integration by establishing a common currency, creating a single market, and setting out the criteria for countries to join the EU.

Germany was the first country to adopt the euro as its official currency on January 1, 2002.

As of 2023, there are 27 member states in the European Union.

The European Central Bank (ECB) is the central bank of the European Union.

The EU's single market is officially known as the European Single Market, the Common Market, and the Internal Market.

The EU's common agricultural policy is known as the Common Agricultural Policy (CAP).

The EU's structural and cohesion funds are collectively known as the Structural and Cohesion Funds.

The EU's research and development program is known as Horizon Europe.

The EU's Erasmus+ program is officially known as Erasmus+.

The EU's European Social Fund is officially known as the European Social Fund.