In short
On January 1, 1999, eleven European countries adopted the euro as a common currency, replacing their national monies with a single shared system. The move was the most ambitious monetary experiment since World War II, designed to deepen European integration and simplify cross-border trade. It mattered because it reshaped how hundreds of millions of people handled money, and set the stage for what would become the world's second-most-used currency.
How it unfolded.
The five-minute version
What actually happened.
The euro is the official currency of 21 of the 27 member states of the European Union. This group of states is officially known as the euro area, more commonly named the eurozone. The euro is divided into 100 euro cents.
Captured in time.
Captured before it changed
The web as it looked, the day it happened.
Wayback Machine snapshots of the pages people actually loaded that day. Click any card to open the archive at full size.
Sources & citations.
Sources
Where this came from.
Every claim on this page traces to a public, license-clean source. We don't asterisk well.
Wikipedia
1 source- 1.Euro currency
en.wikipedia.org