The 'Danube River', Europe's second-longest river, empties into which major body of water via an extensive delta designated as a UNESCO World Heritage site?

💡 Solution & Explanation

The Danube River traverses multiple European nations before discharging into the Black Sea through a protected delta wetland ecosystem. Other European seas like the Baltic or North receive drainage from distinct river systems. Major river basins and drainage patterns are staple topics in world geography.