Sofia is a city bordering the Black Sea south of Romania
If you think to Bulgaria some cities are Varna, Burgas, Plovdiv, Sofia, Silistra, Russe, etc.
Silistra
Bulgaria
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Varna
This country is Bulgaria.
Bulgaria is at the South of Romania
Romania is a small country in the South-East of Europe.
This country is Bulgaria.
Romania is an European country in the South-East of Europe.
Starting at the south and going around the country clockwise, Romania is bordered by Bulgaria, Serbia, Hungary, Ukraine and Moldova, as well as the Black Sea.
Russian Federation to the east and northeast, Belarus to the northwest, Poland, Slovakia and Hungary to the west, Romania and Moldova to the southwest
A country------ Romania is situated in the South-Eastern part of the continent Europe.
Bulgaria is a European country in the south-western part of Europe. It is accessible through Romania, Serbia, and Macedonia. To the south of it is the Black Sea.
Hungary, Serbia, Bulgaria, Republic of Moldova, Ukraine and the Black Sea.
Bulgaria is a nation that is directly south of Romania and west of the Black Sea. A small portion of Turkey is also in this region of Europe.