Also if anyone could provide figures how many were there?
Technically, the Balkan countries are all European, so that’s the first thing. I think the answer would be two—Albania and Bosnia-Herzegovina—Macedonia has a large minority as well consisting of different subgroups: Albanians, Macedonian converts to Islam, descendants of Turkic ottomans, and Roma people. So it’s a little complicated. Greece, Bulgaria and other places had large populations before the population transfers after wwi.