I don't know. It seems to be dangerous to paint broad strokes like that. My immediate heritage is german, italian and croatian and am from Croatia, speak croatian and live there/here. Yet, I understand 90% of macedonian and probably 70% of bulgarian without ever learning either language. Where is the line then? Since I was born here and learned this language as my first, yet not anyone from my family (grandparents and beyond) is from here... is my origin then same as yours or what? It's a dangerous path. For example, whole region was Rumelia for 502 years up to about 150 years ago, capital was in Sofia (if I remember correctly). Are you all Turkish then? Even people that settled there after Rumelia was gone, but understand the language (as their first)? Where does one define clear lines and be so confident in things like that? It's not that simple.