Those coordinates can't describe any nation, because no place on Earth can have those coordinates. The latitude (north or south) of every place on Earth must be 90 degrees or less. "90 degrees north" is the north pole, "90 degrees south" is the south pole, and you can't go any farther north or south than those.
Bulgaria is directly south of Romania.
To answer this question we need to know south or north of what.
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.
0 degrees north is the north pole and zero degrees south is the south pole.
The Equator is termed 0 degrees. 90 degrees south is the South Pole, 90 degrees north is the North Pole.
Ninety degrees South Latitude for the south pole and ninety degrees North Latitude for the north pole. No longitude indicator is required to position poles on the planet earth.
Romania is located in the South East of Europe, to the North of Danube.
90 degrees north latitude and the south pole is 90 degrees south latitude
The highest degree of latitude is 90 degrees north and 90 degrees south.
Latitude goes from zero degrees to 90 degrees north or south. The north pole is at 90 degrees north; the south pole is at 90 degrees south.
The south pole is 90 degrees south of the equator. The north pole is 90 degrees north of the equator.