1878. Bulgaria. Setting up a de jure autonomous Bulgarian principality. Third Bulgarian state.
The Treaty of San Stefano was signed on 3 March 1878, setting up a de jure autonomous Bulgarian principality on the territories of the Second Bulgarian Empire. The Great Powers immediately rejected the treaty out of fear that such a large country in the Balkans might threaten their interests. The subsequent Treaty of Berlin provided for a much smaller state comprising Moesia and the region of Sofia, leaving large populations of Bulgarians outside the new country. This played a significant role in forming Bulgaria's militaristic approach to foreign affairs during the first half of the 20th century.
The Bulgarian principality won a war against Serbia and incorporated the semi-autonomous Ottoman territory of Eastern Rumelia in 1885, proclaiming itself an independent state on 22 September 1908.
Web: Wikipedia