The larger proposed Bulgarian state was suggested under the Treaty of San Stefano in 1878.
The issue of irredentism and nationalism gained greater prominence after the Treaty of San Stefano.
It saw the previous territory divided in three – the Principality of Bulgaria, the autonomous province of Eastern Rumelia, and Macedonia, which remained under Ottoman control.
Just before entering World War II, Bulgaria had peacefully secured the return of Southern Dobruja from Romania in the Treaty of Craiova.
[2] With the exception of Southern Dobruja, these concessions were reversed with the Allied victory (i.e. at the Paris Peace Conference of 1947).