Bulgarian unification
The Unification of Bulgaria (Bulgarian: Съединение на България, Saedinenie na Balgariya) was the act of unification of the Principality of Bulgaria and the then-Ottoman province of Eastern Rumelia in the autumn of 1885. It was co-ordinated by the Bulgarian Secret Central Revolutionary Committee (BSCRC). The Unification was accomplished after revolts in Eastern Rumelian towns, followed by a coup on 18 September [O.S. 6 September] 1885 supported by the Bulgarian Knyaz Alexander I. The BSCRC, formed by Zahari Stoyanov, began actively popularizing the idea of unification by means of the press and public demonstrations in the spring of 1885.
Background
The 10th Russo-Turkish War (1877–1878) ended with the signing of the preliminary Treaty of San Stefano, which cut large territories off the Ottoman Empire. Bulgaria was resurrected after 482 years of foreign rule, albeit as an Principality under Ottoman suzerainty.
The Russian diplomats knew that Bulgaria would not remain within these borders for very long — the San Stefano peace was called "preliminary" by the Russians themselves. The Berlin Congress began on 13 June [O.S. 1 June] 1878 and ended on 13 July [O.S. 1 July] 1878 with the Berlin Treaty that created a vassal Bulgarian state in the lands between the Balkans and the Danube. The area between the Balkan Mountains and the Rila and Rhodope Mountains became an autonomous Ottoman province called Eastern Rumelia.The separation of southern Bulgaria into a different administrative region was a guarantee against the fears expressed by Great Britain and Austria-Hungary that Bulgaria would gain access to the Aegean Sea, which logically meant that Russia was getting closer to the Mediterranean.
