Bulgaria, or Republic of Bulgaria, a country in southeastern Europe occupying part of the Balkan Peninsula. It fronts on the Black Sea and is bordered by Romania, Serbia and Montenegro, Macedonia, Greece, and Turkey. Bulgaria has an area of 42,823 square miles (110,912 km2). Maximum dimensions are about 310 miles (500 km) east-west and 190 miles (310 km) north-south.

BulgariaBulgaria is a country in southeastern Europe.