The Empire of the Romans (Greek: Βασιλεια Ρωμαιον), commonly known as Romania, is a Eurasian country located in southern Europe and western Asia. It is bordered by Bulgaria and Albania to the northwest, Caucasia to the northeast, Kurdistan to the east, and Palestine, Hejaz and Nejd to the south. The Mediterranean Sea is to the south, the Euxine Sea to the north, and the Aegean Sea is completely surrounded by Roman territory. The Sea of Marmara, the Bosporus and the Dardanelles form the boundary between Europe and Asia.