What is the name of the second-largest city, a major port on the Thermaic Gulf at the mouth of the Axios River?

• A Patras
• B Thessaloniki ✓
• C Heraklion
• D Volos

Thessaloniki, founded around 315 BCE and named after Alexander the Great's half-sister, is the second-largest city and the cultural and economic hub of northern Greece, on the Thermaic Gulf.