The European Union (abbreviation: EU) is a confederation of 27 member countries in Europe established by the Maastricht Treaty in 1992-1993. The EU grew out of the European Economic Community (EEC) which was established by the Treaties of Rome in 1957. It has created a common economic area with Europe-wide laws allowing the citizens of EU countries to move and trade in other EU countries almost the same as they do on their own. Nineteen of these countries also share the same type of money: the euro.

The name of Europe comes from the Latin Europa, which in turn derives from the Greek Εὐρώπη, from εὐρύς eurys "wide" and ὤψ ops "face".

The Treaty of Lisbon is the most recent treaty that says how the Union is run. Every member state signed to say that they each agreed with what it says. Most importantly, it says which jobs (’powers’) the Union should do for the members and which jobs they should do themselves. The members decide how the Union should act by voting for or against proposals.

The objective of the EU is to bring its member states closer together with respect of human rights and democracy. It does this with common rules about fair trading with each other, common agreements about law enforcement, a common style of passport, and other agreements. Most members share a common currency (the euro) and most allow people to travel from one country to another without having to show a passport. It does this with common rules about fair trading with each other, common agreements about law enforcement, and other agreements. It has a common style for (its) passports.