Customs War of the Kingdom of Serbia and the Habzburg Monarchy at the beginning of the 20th century
After gaining independence at the Berlin Congress, Serbia became the center around which all the surrounding Serbs gathered, seeking final liberation and unification. The great difficulty for a small Serbia was the Austro-Hungarian Empire, which in every way was trying to influence the Serbian internal and foreign policy. In doing so, she succeeded to a large extent during the reign of King Milan, even after his abdication, until the beginning of the XX century. The change in the throne after the May uprising led to the emancipation of Serbia from the influence of the Austro-Hungarian Empire and the influence of other powers, in particular France and Russia. On the other hand, Serbia is increasingly independent in foreign policy and tries to connect with other Balkan states as if it economically strengthens to carry out a national unification mission. That is why the Austro-Hungarian conflict with Serbia on the economic plane, the Customs War, was inevitable. At the same time, this conflict has shown the strength and weaknesses of both countries. Serbia's victory in the Customs War showed her great economic rise, and Austro-Hungary became its fatal enemy.