The European Union.
The European Union was formally established (with the Maastricht Treaty) on November 1, 1993. However, January 1, 2002, is a day that many people remember. It wasn't just the start of another new year. It was also the start of a new era for the 304 million prople living in 12 European countries. On that day the Euro became the official currency of their countries. The European Union currnetly has 27 number states, and new members are expected to join Citizens of number countries can travel freely, live, study, and work in any of the member countries.