Today is the National Day of Bulgaria that celebrates the freedom of Bulgaria from Ottoman yoke.
On 3rd March 1878 was signed the Treaty of San Stefano which ended the Russo-Turkish war of 1877-78..
The borders of the Trird Bulgarian state were based on the ethnicity of the people living there according to a research made in 1870.
Regarding this matter a congress in Berlin was made. The Great powers feared that Bulgaria would be a Russian satelite and the treaty of 1st July 1878 made major changes.
Macedonia was returned to Turkey, Thace was made autonomuos, Dobridja was given to Rumania because of the Russian anexion of South Besarabia and the West Outlands were given to Serbia.
The treaty of San Stefano was a national dream for which the Bulgarians fought in the next 5 wars.