The Greek Drachma (plural: drachmas or drachmai) was the official currency of Greece for several centuries until it was replaced by the Euro. The transition from the drachma to the euro took place in 2002 when Greece adopted the common European currency along with several other European Union (EU) member countries.

Key points about the Greek Drachma include:

1. **Historical Background:** The drachma has a long history dating back to ancient Greece. It was used as the currency of Greece in various forms for many centuries.

2. **Modern Drachma:** The modern Greek drachma was reintroduced as the official currency in 1832, following the establishment of the modern Greek state. It went through various changes in terms of design and denominations over the years.

3. **Denominations:** The drachma was subdivided into smaller units, including the lepton and the obol. In modern times, the drachma had various denominations, including coins and banknotes of different values.

4. **Devaluation:** In the post-World War II period, Greece experienced periods of economic instability and high inflation, leading to the devaluation of the drachma. Devaluation is a situation where the value of a currency is reduced relative to other currencies.

5. **Euro Adoption:** Greece became a member of the Eurozone on January 1, 2001, and adopted the euro as its official currency on January 1, 2002. The euro is the common currency used by the member countries of the Eurozone, facilitating economic and monetary integration.

6. **Benefits and Challenges:** The adoption of the euro was seen as a step toward greater economic stability and integration within the European Union. However, in subsequent years, Greece faced significant economic challenges, including a debt crisis that emerged in the late 2000s.

7. **Return to the Drachma Discussion:** During the Greek debt crisis, there were discussions and speculations about the possibility of Greece returning to its national currency, the drachma, as a way to address economic challenges. However, Greece remained within the Eurozone.

The transition from the drachma to the euro represented a major change in Greece’s monetary system and its integration into the broader European economic framework. The euro is now the official currency used by Greece and 18 other European countries in the Eurozone.