Principality of Bulgaria in the context of "Edirne Vilayet"

Sofia is the capital and largest city of Bulgaria. It is situated in the Sofia Valley at the foot of the Vitosha mountain, in the western part of the country. The city is built west of the Iskar river and has many mineral springs, such as the Sofia Central Mineral Baths. It has a humid continental climate.

Known as Serdica in antiquity, Sofia has been an area of human habitation since at least 7000 BC. The recorded history of the city begins with the attestation of the conquest of Serdica by the Roman Republic in 29 BC from the Celtic tribe Serdi. During the decline of the Roman Empire, the city was raided by Huns, Visigoths, Avars, and Slavs. In 809, Serdica was incorporated into the First Bulgarian Empire by Khan Krum and became known as Sredets. In 1018, the Byzantines ended Bulgarian rule until 1194, when it was reincorporated by the Second Bulgarian Empire. Sredets became a major administrative, economic, cultural and literary hub until its conquest by the Ottomans in 1382. From 1530 to 1836, Sofia was the regional capital of Rumelia Eyalet, the Ottoman Empire's largest and most important province. Bulgarian rule was restored in 1878. Sofia was selected as the capital of the Third Bulgarian State in the next year, ushering a period of intense demographic and economic growth.

The Tsardom of Bulgaria (Bulgarian: Царство България, romanized: Tsarstvo Bŭlgariya), also known as the Third Bulgarian Tsardom (Bulgarian: Трето Българско Царство, romanized: Treto Bŭlgarsko Tsarstvo), usually known in English as the Kingdom of Bulgaria, or simply Bulgaria, was a constitutional monarchy in Southeastern Europe, which was established on 5 October [O.S. 22 September] 1908, when the Bulgarian state was raised from a principality to a tsardom.

Prince Ferdinand, founder of the royal family, was crowned as tsar at the Declaration of Independence, mainly because of his military plans and for seeking options for unification of all lands in the Balkans region with an ethnic Bulgarian majority (lands that had been seized from Bulgaria and given to the Ottoman Empire in the Treaty of Berlin). He and his successors were reckoned as kings internationally.

The Bulgarian Navy (Bulgarian: Военноморски сили на Република България, romanized: Voennomorski sili na Republika Balgariya, lit. 'Naval Forces of the Republic of Bulgaria') is the navy of the Republic of Bulgaria and forms part of the Bulgarian Armed Forces.

The Principality of Bulgaria established its navy soon after its creation, in 1879, to operate on the Danube river and the Black Sea, but the young country could spend only limited resources on warships. In the conflicts of the 20th century in which Bulgaria was involved - the Balkan Wars, World War I and World War II, the navy played a limited role, mainly protecting Bulgarian harbors and shipping. The navy's greatest combat feat was a torpedo attack against an Ottoman cruiser during the First Balkan War that forced the ship to retreat.

Barakovo (Bulgarian: Бараково) is a village in Kocherinovo Municipality, Kyustendil Province of southwest Bulgaria. As of 2013, it had a population of 468. It is situated at the western foothills of the Rila Mountains on the banks of the Rilska River. Between 1974 and 1991 it was administratively a neighbourhood of the town of Kocherinovo.

After the Liberation of Bulgaria in 1878 the village remained within the Ottoman Empire on the very border with the Principality of Bulgaria. The population supported the Bulgarian Internal Macedonian Revolutionary Organization. At the outbreak of the First Balkan War in 1912 seven people from Barakovo joined the Macedonian-Adrianopolitan Volunteer Corps that was formed in support the Bulgarian war effort against the Ottomans.

The monarchs of Bulgaria ruled Bulgaria during the medieval First (c. 681–1018) and Second (1185–1422) Bulgarian empires, as well as during the modern Principality (1879–1908) and Kingdom (1908–1946) of Bulgaria. This list includes monarchs from the establishment of the First Bulgarian Empire until modern times, omitting earlier mythical rulers as well as rulers of separate states such as Old Great Bulgaria and Volga Bulgaria.

Various titles have been used by the rulers of Bulgaria. The only recorded title, used before Bulgaria's conversion to Christianity, is kanasubigi, likely meaning "Khan, Lord of the Army" or "the sublime Khan". When Bulgaria converted to Christianity in the ninth century, the ruler Boris I (852–889) was using the title knyaz (prince). For much of its later history under the first and second empires, Bulgaria functioned as a multi-ethnic imperial state modelled on the neighbouring Byzantine Empire, which contributed to the adoption of the title of tsar (emperor) by Bulgarian monarchs beginning with Simeon I (893–927) in 913. Some powerful medieval Bulgarian rulers challenged Byzantine authority by proclaiming themselves as both Bulgarian and Roman emperors.

After the Russo-Turkish War of 1877–1878, the 1878 Treaty of Berlin set up an autonomous state, the Principality of Bulgaria, within the Ottoman Empire. Although remaining under Ottoman sovereignty, it functioned independently, taking Alexander of Battenberg as its first prince in 1879. In 1885 Alexander took control of the still-Ottoman Eastern Rumelia, officially under a personal union. Following Prince Alexander's abdication (1886), a Bulgarian Assembly elected Ferdinand I as prince in 1887. Full independence from Ottoman control was declared in 1908.

In the 1912–1913 Balkan Wars, Bulgaria initially formed an alliance with Greece, Serbia and Montenegro against the Ottoman Empire, and together they conquered a great deal of Ottoman territory. Bulgaria, however, unhappy with the resulting division of territory, soon went to war against its former allies Serbia and Greece and lost territory it had gained in the first war. The First World War (1914–1918) saw Bulgaria fighting (1915–1918) alongside Germany, Austria-Hungary, and the Ottoman Empire. Defeat led to the Treaty of Neuilly-sur-Seine (27 November 1919), in accordance with which Bulgaria lost further territory. Social problems and political instability persisted throughout the Interwar period. In the Second World War (1939–1945), Bulgaria again allied with Germany (March 1941). Although Sofia attempted to pull out of the war as the Soviet Union advanced towards its territory (1944), the Red Army invaded (September 1944), and a communist government came to power (1944–1946) and established the People's Republic of Bulgaria (1946–1990).