The Third Kingdom
After the Russo-Turkish War, an autonomous Bulgarian state was created within the Ottoman Empire by the Treaty of Berlin in 1878. Although remaining under Ottoman sovereignty, it functioned independently, taking Alexander of Battenberg as its first prince. In 1885 it took control of the still-Ottoman Eastern Rumelia, officially under a personal union. Following the abdication of Alexander, Ferdinand I was elected prince in 1887. Full independence was declared in 1908.
The 1912–1913 Balkan Wars, Bulgaria initially formed an alliance with Greece and Serbia against the Ottoman Empire, together liberating a great deal of Ottoman territory. Bulgaria was however unhappy with the resulting division of territory, and soon went to war against its former allies, in which it lost territory it had gained in the first war. The First World War saw Bulgaria allied with Germany, Austria-Hungary, and the Ottoman Empire. Its defeat led to the Treaty of Neuilly-sur-Seine, in which it lost further territory. Social problems and political instability persisted throughout the inter-war years. In the Second World War, Bulgaria again allied with Germany. Although it attempted to pull out of the war as Soviet Union advanced towards it, it was invaded, and a communist government was put into power.
1878–1912
The proposed Treaty of San Stefano of March 3, 1878 provided for a self-governing Bulgarian state, which comprised the geographical regions of Moesia, Thrace and Macedonia. Fearing the establishment of a large Russian client state on the Balkans, the other Great Powers, especially Britain and Austro-Hungary, were not willing to agree to the treaty. The British were concerned over the safety of their routes to the Suez Canal and India. The Dual Monarchy that was the Austria-Hungarian Empire was afraid that establishment of a large independent Slavic state in the Balkans would encourage other Slavs living in the Austro-Hungarian Empire to also seek an independent break away state. Accordingly, both Britain and Austria-Hungary sought for the treaty to be revised.
As a result, the Treaty of Berlin (1878), under the supervision of Otto von Bismarck of Germany and Benjamin Disraeli of Britain, revised the earlier treaty, and scaled back the proposed Bulgarian state. An autonomous Principality of Bulgaria was created, between the Danube and the Stara Planina range, with its seat at the old Bulgarian capital of Veliko Turnovo, and including Sofia. This state was to be under nominal Ottoman sovereignty but was to be ruled by a prince elected by a congress of Bulgarian notables meeting in Turnovo as the Bulgarian Principality's Constituent Assembly on February 10, 1879 and approved by the Powers. They insisted that the Prince could not be a Russian, but in a compromise Prince Alexander of Battenberg, a nephew of Tsar Alexander II, was chosen. An autonomous Ottoman province under the name of Eastern Rumelia was created south of the Stara Planina range, whereas Macedonia was returned under the sovereignty of the Sultan.
Personal Union with Eastern Rumelia
The Bulgarians adopted an advanced democratic constitution, and power soon passed to the Liberal Party led by Stefan Stambolov. Prince Alexander had conservative leanings, and at first opposed Stambolov's policies, but by 1885 he had become sufficiently sympathetic to his new country to change his mind, and supported the Liberals. He also supported the Unification of Bulgaria and Eastern Rumelia, which was brought about by a coup in Plovdiv in September 1885. The Powers did not intervene because of the power struggles between them. Shortly after, Serbia declared war on Bulgaria in the hope of grabbing territory while the Bulgarians were distracted. The Bulgarians defeated them at Slivnitsa and used the momentum to launch a counterattack. The Serbian army was pushed deeply into Serbian territory, but Bulgaria was forced to halt its advance after the Austro-Hungarian Empire threatened to intervene on the Serbian side. The unification was accepted by the Powers in the form of personal union.
Ferdinand
These events made Alexander very popular in Bulgaria, but Russia was increasingly dissatisfied with his liberal tendencies. In August 1886 they fomented a coup, in the course of which Alexander was forced to abdicate and was exiled to Russia. Stambolov, however, acted quickly and the participants in the coup were forced to flee the country. Stambolov tried to reinstate Alexander, but strong Russian opposition forced the prince to abdicate again. In July 1887 the Bulgarians elected Ferdinand of Saxe-Coburg-Gotha as their new Prince. Ferdinand was the "Austrian candidate" and the Russians refused to recognize him despite his friendship with Tsar Alexander III. Ferdinand initially worked with Stambolov, but by 1894 their relationship worsened. Stambolov resigned and was assassinated in July 1895. Ferdinand then decided to restore relations with Russia, which meant returning to a conservative policy.
There was a substantial Bulgarian population still living under Ottoman rule, particularly in Macedonia. To complicate matters, Serbia and Greece too made claims over parts of Macedonia. Thus began the Balkan Wars, a five-sided struggle for control of these areas which lasted through World War I (Bulgaria during World War I). In 1903 there was a Bulgarian insurrection in Ottoman Macedonia and war seemed likely. In 1908 Ferdinand used the struggles between the Great Powers to declare Bulgaria a fully independent kingdom, with himself as Tsar, which he did on 5 October (though celebrated on 22 September, as Bulgaria remained officially on the Julian Calendar until 1916) in the St Forty Martyrs Church in Veliko Tarnovo.
Websites
https://en.wikipedia.org/wiki/History_of_Bulgaria_(1878%E2%80%931946)
