 Romania also acquired Southern Dobruja territory called "The Quadrilateral" from Bulgaria as a result of its participation in the Second Balkan War in 1913.As a result of the peace treaties, most regions with clear Romanian majorities were merged into a single state.It also led to the inclusion of sizable minorities, including Magyars (ethnic Hungarians), Germans, Jews, Ukrainians and Bulgarians—about 28% of the country's population.