Bulgarian Ethnic Territory lost at the Treaty of Berlin (June 1878) from San Stefano Bulgaria -  given to Serbia -  and  returned to Turkey -  given to Romania.
Boundaries of the Bulgarian Language as published in Leipzig - 1929. Main dialects: [A] E-W; [B] N-W; [C] OLD S-E; [D] Central Rhodope
Bulgarian ethnic territory lost at Treaty of Neuilly (1919). Given to Serbia -  Timok,  Tsaribrod,  Bosiligrad &  Strumitsa. Given to Greece -  Western Thrace.