Q. Which are the basin countries of the "Thermaic Gulf"?
Answer: Greece and North Macedonia
Notes: Greece and North Macedonia are the basin countries of the "Thermaic Gulf". The Thermaic Gulf, also called the Gulf of Salonika and the Macedonian Gulf, is a gulf constituting the northwest corner of the Aegean Sea. The city of Thessaloniki is at its northeastern tip, and it is bounded by Pieria and Imathia on the west and the Chalkidiki peninsula on the east, with Cape Kassandra at the southeasternmost corner.