| Clue | Source | Date |
|---|---|---|
| Continental region with a shared currency | ||
| Currency zone whose members include Finland and Malta | New York Times | 28 Jun 2023 |
| 19-member monetary union | Wall Street Journal | 08 May 2021 |
| Multinational monetary union | Newsday | 08 Jul 2018 |
| Currency union since 1999 |