It depends on what is meant by "Caucasian country".
If it strictly refers to a nation in the Caucasus mountains, the answer would be Georgia.
If it refers to any country whose inhabitants would be considered "White" or "Caucasian" in race, the answer is Georgia, Russia, Ukraine, Romania, and Bulgaria.
No, the Black Sea is only the south-east boundary.
There is no country that borders the Black Sea and the Red Sea.
The Sulu Sea helps form the western boundary of the Philippines.
The country is Eritrea, and it's eastern boundary is formed by the Red Sea.
black sea
black sea
TURKEY is the country between the Mediterranean Sea and the Black Sea. Its capital is Ankara.
This country is Turkey.
The only country that borders the Black Sea and the Mediterranean Sea is Turkey. Its capital is Ankara.
the caucasus mountains
The Black Sea is directly North of Turkey
Ankara is the capital of the Republic of Turkey, the only country that borders both the Mediterranean Sea and the Black Sea.