(there were always and are still many non-Slav elements) was originally the same as that in the other parts of the peninsula, and probably more akin to the Serbs, who are pure Slavs, than to the Slavs of Bulgaria, who coalesced with their Asiatic conquerors. In course of time, however, Bulgarian influences, owing to the several periods when the Bulgars ruled the country, began to make headway. The Albanians also (an Indo-European or Aryan race, but not of the Greek, Latin, or Slav families), who, as a result of all the invasions of the Balkan peninsula, had been driven southwards into the inaccessible mountainous country now known as Albania, began to spread northwards and eastwards again during the Turkish dominion, pushing back the Serbs from the territory where they had long been settled. During the Turkish dominion neither Serb nor Bulgar had any influence in Macedonia, and the Macedonian Slavs, who had first of all been pure Slavs, like the Serbs, then been several times under Bulgar, and finally, under Serb influence, were left to themselves, and the process of differentiation between Serb and Bulgar in Macedonia, by which in time the Macedonian Slavs would have become either Serbs or Bulgars, ceased. The further development of the Macedonian question is treated elsewhere (cf. chap. 13). The Serbs, who had no permanent or well-defined frontier in the east, where their neighbours were the Bulgars, or in the south, where they were the Greeks and Albanians, were protected on the north by the river Save and on the west by the Adriatic. They were split up into a number of tribes, each of which was headed by a chief called in Serbian _župan_ and in Greek _archōn_. Whenever any one of these managed, either by skill or by good fortune, to extend his power over a few of the neighbouring districts he was termed _veliki_ (=great) _župan_. From the beginning of their history, which is roughly put at A.D. 650, until A.D. 1196, the Serbs were under foreign domination. Their suzerains were nominally always the Greek emperors, who had ‘granted’ them the land they had taken, and whenever the emperor happened to be energetic and powerful, as were Basil I (the Macedonian, 867-86), John Tzimisces (969-76), Basil II (976-1025), and Manuel Comnenus (1143-80), the Greek supremacy was very real. At those times again when Bulgaria was very powerful, under Simeon (893-927), Samuel (977-1014), and John Asen II (1218-41), many of the more easterly and southerly Serbs came under Bulgarian rule, though it is instructive to notice that the Serbs themselves do not recognize the West Bulgarian or Macedonian kingdom of Samuel to have been a Bulgarian state. The Bulgars, however, at no time brought all the Serb lands under their sway.