Cadrilater
Just before entering World War II, Bulgaria had peacefully secured the return of Southern Dobruja from Romania in the Treaty of Craiova. During World War II some of the territories in question were briefly added to Bulgaria by Nazi Germany, as a reward to Bulgaria, which had fought with Germany as one of the Axis powers. It was granted territory in Greece, namely Eastern Macedonia and parts of Western Thrace, as well as Yugoslav Macedonia (Vardar Macedonia). With the exception of the Southern Dobruja, these concessions were reversed with the Allied victory (i.e. at the Paris Peace Conference of 1947).