
The Unification of Bulgaria () was the act of unification of the
Principality of Bulgaria
The Principality of Bulgaria () was a vassal state under the suzerainty of the Ottoman Empire. It was established by the Treaty of Berlin in 1878.
After the Russo-Turkish War ended with a Russian victory, the Treaty of San Stefano was signed ...
and the province of
Eastern Rumelia in the autumn of 1885. It was co-ordinated by the
Bulgarian Secret Central Revolutionary Committee (BSCRC). Both had been parts of the
Ottoman Empire
The Ottoman Empire (), also called the Turkish Empire, was an empire, imperial realm that controlled much of Southeast Europe, West Asia, and North Africa from the 14th to early 20th centuries; it also controlled parts of southeastern Centr ...
, but the principality had functioned de facto independently whilst the Rumelian province was autonomous and had an Ottoman presence. The unification was accomplished after revolts in Eastern Rumelian towns, followed by a
coup on supported by the Bulgarian
Prince
A prince is a male ruler (ranked below a king, grand prince, and grand duke) or a male member of a monarch's or former monarch's family. ''Prince'' is also a title of nobility (often highest), often hereditary, in some European states. The ...
Alexander I Alexander I may refer to:
* Alexander I of Macedon, king of Macedon from 495 to 454 BC
* Alexander I of Epirus (370–331 BC), king of Epirus
* Alexander I Theopator Euergetes, surnamed Balas, ruler of the Seleucid Empire 150-145 BC
* Pope Alex ...
. 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
The Russo-Turkish wars ( ), or the Russo-Ottoman wars (), began in 1568 and continued intermittently until 1918. They consisted of twelve conflicts in total, making them one of the longest series of wars in the history of Europe. All but four of ...
ended with the signing of the preliminary
Treaty of San Stefano, which cut large territories from the Ottoman Empire. Bulgaria was resurrected after 482 years of foreign rule, albeit as a principality under Ottoman
suzerainty
A suzerain (, from Old French "above" + "supreme, chief") is a person, state (polity)">state or polity who has supremacy and dominant influence over the foreign policy">polity.html" ;"title="state (polity)">state or polity">state (polity)">st ...
.
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
Congress of Berlin
At the Congress of Berlin (13 June – 13 July 1878), the major European powers revised the territorial and political terms imposed by the Russian Empire on the Ottoman Empire by the Treaty of San Stefano (March 1878), which had ended the Rus ...
began on and ended on 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
Rila (, ) is the highest mountain range of Bulgaria, the Balkans, Balkan Peninsula, and Southeast Europe. It is situated in southwestern Bulgaria and forms part of the Rila–Rhodope Mountains, Rhodope Massif. The highest summit is Musala at an e ...
and
Rhodope Mountains
The Rhodopes (; , ; , ''Rodopi''; ) are a mountain range in Southeastern Europe, and the largest by area in Bulgaria, with over 83% of its area in the southern part of the country and the remainder in Greece. Golyam Perelik is its highest peak ...
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
Great Britain is an island in the North Atlantic Ocean off the north-west coast of continental Europe, consisting of the countries England, Scotland, and Wales. With an area of , it is the largest of the British Isles, the List of European ...
and
Austria-Hungary
Austria-Hungary, also referred to as the Austro-Hungarian Empire, the Dual Monarchy or the Habsburg Monarchy, was a multi-national constitutional monarchy in Central Europe#Before World War I, Central Europe between 1867 and 1918. A military ...
that Bulgaria would gain access to the Aegean Sea, which logically meant that Russia was getting closer to the
Mediterranean
The Mediterranean Sea ( ) is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean basin and almost completely enclosed by land: on the east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern ...
.
The third large portion of Treaty-of-Berlin Bulgaria,
Macedonia
Macedonia (, , , ), most commonly refers to:
* North Macedonia, a country in southeastern Europe, known until 2019 as the Republic of Macedonia
* Macedonia (ancient kingdom), a kingdom in Greek antiquity
* Macedonia (Greece), a former administr ...
, remained within the Ottoman borders as it had been before the war.
Organization

In these conditions it was natural that Bulgarians in Bulgaria, Eastern Rumelia and Macedonia all strived for unity. The first attempt was made in 1880. The new British prime minister,
William Ewart Gladstone
William Ewart Gladstone ( ; 29 December 1809 – 19 May 1898) was a British politican, starting as Conservative MP for Newark and later becoming the leader of the Liberal Party (UK), Liberal Party.
In a career lasting over 60 years, he ...
(who had strongly supported the Bulgarian cause in the past) made Bulgarian politicians hope that the British policy on the
Eastern Question was about to change, and that it will support and look favourably upon an eventual union. Unfortunately, the
Second Gladstone ministry
After campaigning against the foreign policy of the Beaconsfield ministry, William Ewart Gladstone led the Liberal Party to victory in the 1880 general election. The nominal leader of the Party, Spencer Cavendish, Marquess of Hartington, res ...
did not bring a change in Great Britain's interests. Secondly, there was a possible conflict growing between the Ottoman Empire on one side and
Greece
Greece, officially the Hellenic Republic, is a country in Southeast Europe. Located on the southern tip of the Balkan peninsula, it shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to th ...
and
Montenegro
, image_flag = Flag of Montenegro.svg
, image_coat = Coat of arms of Montenegro.svg
, coa_size = 80
, national_motto =
, national_anthem = ()
, image_map = Europe-Mont ...
on the other.
The union activists from Eastern Rumelia sent
Stefan Panaretov, a lecturer in
Robert College
The American Robert College of Istanbul ( or ), often abbreviated as Robert or RC, is a Selective school, highly selective, Independent school, independent, mixed-sex education, co-educational, Education in Turkey#Private schools, private Second ...
, to consult the British opinion on the planned unification. Gladstone's government though, did not accept these plans. Disagreement came from
Imperial Russia
Imperial is that which relates to an empire, emperor/empress, or imperialism.
Imperial or The Imperial may also refer to:
Places
United States
* Imperial, California
* Imperial, Missouri
* Imperial, Nebraska
* Imperial, Pennsylvania
* ...
as well, which was strictly following the decisions taken during the Berlin Congress. Meanwhile, the tensions between Greece and the Ottoman Empire had settled, which finally brought the first unification attempt to a failure.
By mid-1885 most of the active unionists in Eastern Rumelia shared the vision that the preparation of a revolution in Macedonia should be postponed and all efforts should be concentrated on the unification of Bulgaria and Eastern Rumelia. The Bulgarian Prince Alexander I was also drawn to this cause. His relations with Russia had worsened to such extent that the Russian emperor and the pro-Russian circles in Bulgaria openly called for Alexander's abdication. The young prince saw that his support for the Unification is his only chance for political survival.
Unification
The unification was initially scheduled for the middle of September, while the Rumelian militia was mobilized for performing manoeuvres. The plan called for the unification to be announced on , but on a riot began in
Panagyurishte (then in Eastern Rumelia) that was brought under control the same day by the police. The demonstration demanded unification with Bulgaria. A little later this example was followed in the village of Goliamo Konare. An armed squad was formed there, under the leadership of Prodan Tishkov (mostly known as
Chardafon) – the local leader of the BSCRC. BSCRC representatives were sent to different towns in the province, where they had to gather groups of rebels and send them to
Plovdiv
Plovdiv (, ) is the List of cities and towns in Bulgaria, second-largest city in Bulgaria, 144 km (93 miles) southeast of the capital Sofia. It had a population of 490,983 and 675,000 in the greater metropolitan area. Plovdiv is a cultural hub ...
, the capital of Eastern Rumelia, where they were under the command of Major
Danail Nikolaev.

Meanwhile, military manoeuvres were being carried out in the outskirts of Plovdiv. Major Danail Nikolaev, who was in charge of the manoeuvres, was aware of and supported the unionists. On , Rumelian militia (Eastern Rumelia's armed forces) and armed unionist groups entered Plovdiv and took over the governor's residence.
The Governor
Gavril Krastevich, was arrested by the rebels and paraded through the streets of Plovdiv before being expelled to
Constantinople
Constantinople (#Names of Constantinople, see other names) was a historical city located on the Bosporus that served as the capital of the Roman Empire, Roman, Byzantine Empire, Byzantine, Latin Empire, Latin, and Ottoman Empire, Ottoman empire ...
.
A temporary government was formed immediately, with
Georgi Stranski at its head. Major Danail Nikolaev was appointed commander of armed forces. With help from Russian officers, he created the strategical plan for defence against the expected Ottoman intervention. Mobilization was declared in Eastern Rumelia.
As soon as it took power on , the temporary government sent a telegram, asking the prince to accept the unification. On Alexander I answered with a special manifesto. On the next day, accompanied by the prime minister
Petko Karavelov and the head of Parliament
Stefan Stambolov
Stefan Nikolov Stambolov (; 31 January 1854 Adoption of the Gregorian calendar#Adoption in Eastern Europe, OS – 19 July 1895 Adoption of the Gregorian calendar#Adoption in Eastern Europe, OS) was a Bulgarian politician, journalist, revoluti ...
, Prince Alexander I entered the capital of the former Eastern Rumelia. This gesture confirmed the unionists' actions as a fait accompli. But the difficulties of the diplomatic and military defence of the union lay ahead.
International response to unification
In the years after the signing of the Berlin treaty, the
St. Petersburg government had often expressed its view that the creation of Eastern Rumelia out of southern Bulgaria was an unnatural division and would be short-lived. Russia knew that the Unification would undoubtedly come soon and took important measures for its preparation. First, Russia exerted successful diplomatic pressure upon the Ottoman Empire constraining it from sending forces into Eastern Rumelia. Also, in 1881, in a special protocol, created after the re-establishment of the
League of the Three Emperors, it was noted that
Austria-Hungary
Austria-Hungary, also referred to as the Austro-Hungarian Empire, the Dual Monarchy or the Habsburg Monarchy, was a multi-national constitutional monarchy in Central Europe#Before World War I, Central Europe between 1867 and 1918. A military ...
and
Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
would show support for a possible union of the Bulgarians.
Russia
Following the establishment of the Principality of Bulgaria, the head of Russian temporary administration
Alexander Dondukov-Korsakov sought to create the foundations for Russian influence over the new state. Upon the ascension of Prince Alexander I to the Bulgarian throne, Russia dispatched numerous military officers and consultants to Bulgaria to further its diplomatic goals in the region. In 1883, Prince Alexander I began removing Russian advisors from their positions in an effort to assert his independence. When Bulgarian revolutionaries removed the pro-Russian governor of Eastern Rumelia
Gavril Krastevich, Tsar
Alexander III of Russia
Alexander III (; 10 March 18451 November 1894) was Emperor of Russia, King of Congress Poland and Grand Duke of Finland from 13 March 1881 until his death in 1894. He was highly reactionary in domestic affairs and reversed some of the libera ...
became enraged, ordering all Russian advisors to abandon Bulgaria and stripped Prince Alexander I of his rank in the Russian military. Thus while Russia supported Bulgaria during the Berlin Congress, it was firmly opposed to Bulgarian unification.
United Kingdom
In autumn 1885, Prince Alexander I met with British prime minister
Lord Salisbury
Robert Arthur Talbot Gascoyne-Cecil, 3rd Marquess of Salisbury (; 3 February 183022 August 1903), known as Lord Salisbury, was a British statesman and Conservative Party (UK), Conservative politician who served as Prime Minister of the United ...
during an official visit to London, convincing him that the establishment of a
Greater Bulgaria was within the interests of the British state. While Salisbury had fiercely argued for the separation Eastern Rumelia during the Berlin Congress, he then claimed that the circumstances had changed; and the unification was necessary, as it would prevent Russian expansion towards Constantinople. The government circles in London initially thought that powerful support by St. Petersburg stood behind the bold Bulgarian act. They soon realised the reality of the situation, and after the Russian official position was announced, Great Britain gave its support for the Bulgarian cause, but not until Bulgarian-Ottoman negotiations began.
Austria-Hungary
Austria-Hungary
Austria-Hungary, also referred to as the Austro-Hungarian Empire, the Dual Monarchy or the Habsburg Monarchy, was a multi-national constitutional monarchy in Central Europe#Before World War I, Central Europe between 1867 and 1918. A military ...
's position was determined by its policy towards
Serbia
, image_flag = Flag of Serbia.svg
, national_motto =
, image_coat = Coat of arms of Serbia.svg
, national_anthem = ()
, image_map =
, map_caption = Location of Serbia (gree ...
. In a
secret treaty from 1881, Austria-Hungary accepted Serbia's "right" to expand in the direction of Macedonia. Austria-Hungary's aim was to win influence in Serbia, while at the same time directing Serbian territorial appetites towards the south instead of north and north-west. Also, Austria-Hungary had always opposed the creation of a large Slavonic state in the Balkans of the sort that a unified Bulgaria would become.
France and Germany
They supported the Russian proposal of an international conference in the Ottoman capital.
Ottoman Empire
After the unification was already a fact, it took three days for Constantinople to become aware of what had actually happened. A new problem then arose: according to the
Berlin treaty the sultan was only allowed to send troops to Eastern Rumelia at the request of Eastern Rumelia's governor.
Gavril Krastevich, the governor at the time, made no such request. At the same time the Ottoman Empire was advised in harsh tone both by London and St. Petersburg not to take any such actions and instead to wait for the decision of the international conference. The Ottomans did not attack Bulgaria, nor intervened in the
Serbo-Bulgarian War. On the Ottoman Empire and Bulgaria signed the
Tophane Agreement, which recognized the Prince of Bulgaria as Governor-General of the autonomous Ottoman Province Eastern Rumelia. In this way, the de facto unification of Bulgaria which had taken place on 18 September
.S. 6 September1885, was de jure recognized.
Greece
Even though the two official censuses of Eastern Rumelia, in 1880 and 1884, indicated 42,516 and 53,028 Greeks (5.2% and 5.4%),
respectively, Greek historian
Pavlos Karolidis claimed that Rumelia was inhabited by more than 250,000 ethnic Greeks. Following the proclamation of unification, Greek prime minister
Theodoros Diligiannis protested against the violation of the Treaty of Berlin along with Serbia. Protests broke out in Athens,
Volos
Volos (; ) is a coastal port city in Thessaly situated midway on the Greek mainland, about north of Athens and south of Thessaloniki. It is the capital of the Magnesia (regional unit), Magnesia regional unit of the Thessaly Region. Volos ...
,
Kalamata
Kalamata ( ) is the second most populous city of the Peloponnese peninsula in southern Greece after Patras, and the largest city of the Peloponnese (region), homonymous administrative region. As the capital and chief port of the Messenia regiona ...
and other parts of Greece. The protesters demanded the annexation of Ottoman
Epirus
Epirus () is a Region#Geographical regions, geographical and historical region, historical region in southeastern Europe, now shared between Greece and Albania. It lies between the Pindus Mountains and the Ionian Sea, stretching from the Bay ...
in order to counterbalance the strengthening of the Bulgarian state. Diligiannis responded by declaring
mobilization
Mobilization (alternatively spelled as mobilisation) is the act of assembling and readying military troops and supplies for war. The word ''mobilization'' was first used in a military context in the 1850s to describe the preparation of the ...
on 25 September 1885. Diligiannis informed the Great Powers that he did not intend to get involved in a war with the Ottomans and only sought to appease the pro-war part of the population. Three of his ministers namely Antonopoulos, Zygomalas and Romas urged him to invade Epirus and organize a revolt in
Ottoman Crete
The island of Crete () was declared an Ottoman province (eyalet) in 1646, after the Ottomans managed to conquer the western part of the island as part of the Cretan War (1645–1669), Cretan War, but the Republic of Venice, Venetians Siege of Can ...
in order to restore the
status quo ante bellum
The term is a Latin phrase meaning 'the situation as it existed before the war'.
The term was originally used in treaties to refer to the withdrawal of enemy troops and the restoration of prewar leadership. When used as such, it means that no ...
. Ethnic Greeks residing in Constantinople likewise petitioned the sultan to declare war on Bulgaria. The loss of Eastern Rumelia was seen as a threat to the Greek ambition of expanding into Macedonia and
uniting all Greek populated lands. Having amassed 80,000 soldiers at the Ottoman border, Diligiannis found himself in a
zugzwang
Zugzwang (; ) is a situation found in chess and other turn-based games wherein one player is put at a disadvantage because of their obligation to make a move; a player is said to be "in zugzwang" when any legal move will worsen their position.
A ...
. A defeat in a war with the Ottomans could prove disastrous, while the dispersal of the
Greek army
The Hellenic Army (, sometimes abbreviated as ΕΣ), formed in 1828, is the land force of Greece. The term '' Hellenic'' is the endogenous synonym for ''Greek''. The Hellenic Army is the largest of the three branches of the Hellenic Armed F ...
would mean the loss of popular support, all while the costs of maintaining the army afoot mounted.
On 14 April 1886, the Great Powers (with the exception of
France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
) ordered Greece to demobilize its forces within a week. On 8 May, the Great Powers enacted a
naval blockade
A navy, naval force, military maritime fleet, war navy, or maritime force is the branch of a nation's armed forces principally designated for naval and amphibious warfare; namely, lake-borne, riverine, littoral, or ocean-borne combat operations ...
against Greece (France abstained) in order to force it into demobilizing. Dilligiannis resigned from his position citing the blockade, bringing
Charilaos Trikoupis
Charilaos Trikoupis (; 11 July 1832 – 30 March 1896) was a Greek politician who served as a Prime Minister of Greece seven times from 1875 until 1895.
He is best remembered for introducing the vote of confidence in the Greek constitution, p ...
back to power. A group of nationalist Greek officers launched incursions across the Ottoman border leading to five days of clashes without Trikoupis's knowledge or approval. Trikoupis demobilized the army and the naval blockade of Greece was lifted on 7 June. Greece had spent 133 million
drachmas
Drachma may refer to:
* Ancient drachma, an ancient Greek currency
* Modern drachma, a modern Greek currency (1833...2002)
* Cretan drachma, currency of the former Cretan State
* Drachma proctocomys, moth species, the only species in the Genus '' ...
without achieving any of its foreign policy goals, while its society became deeply polarized between the supporters of Diligiannis and Trikoupis respectively.
Serbia
Serbia's position was similar to that of Greece. The Serbians asked for considerable territorial compensations along the whole western border with Bulgaria. Rebuffed by Bulgaria, but assured of support from Austria-Hungary, King
Milan I declared war on Bulgaria on . However, after the decisive
Battle of Slivnitsa, the Serbs suffered a quick defeat and the Bulgarians advanced into Serbian territory up to
Pirot
Pirot ( sr-Cyrl, Пирот) is a city and the administrative center of the Pirot District in southeastern Serbia. According to 2022 census, the urban area of the city has a population of 34,942, while the population of the city administrative are ...
. Austria-Hungary demanded the ceasing of military actions, threatening that otherwise the Bulgarian forces would meet Austro-Hungarian troops. The ceasefire was signed on 28 November 1885. On 3 March 1886, the peace treaty was signed in
Bucharest
Bucharest ( , ; ) is the capital and largest city of Romania. The metropolis stands on the River Dâmbovița (river), Dâmbovița in south-eastern Romania. Its population is officially estimated at 1.76 million residents within a greater Buc ...
. According to its terms, no changes were made along the Bulgarian-Serbian border, preserving the unification of Bulgaria.
Commemoration
*The
Unification Day is celebrated on 6 September as a
national holiday in Bulgaria.
*The town of
Saedinenie in Plovdiv Province, Bulgaria, bears the name of the unification of Bulgaria.
*
Saedinenie Snowfield on
Livingston Island
Livingston Island (Russian name ''Smolensk'', ) is an Antarctic island in the Southern Ocean, part of the South Shetland Islands, South Shetlands Archipelago, a group of List of Antarctic and subantarctic islands, Antarctic islands north of the ...
in the
South Shetland Islands
The South Shetland Islands are a group of List of Antarctic and subantarctic islands, Antarctic islands located in the Drake Passage with a total area of . They lie about north of the Antarctic Peninsula, and between southwest of the n ...
,
Antarctica
Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. ...
is named for the unification of Bulgaria.
Notes
References
*
*
*
Further reading
*.
*
*
*
*
*
*
*
* Jono Mitev – ''"The Unification"'' / Йоно Митев – ''"Съединението"'', Военно издателство
{{Authority control
National unifications
1885 in Bulgaria
1885 in politics
Bulgaria–Ottoman Empire relations