Bulgaria was determined to observe it until the end of the war ; but it hoped for bloodless territorial gains, especially in the lands with a significant Bulgarian population occupied by neighbouring countries after the Second Balkan War and World War I.

Then the Greek army counter-attacked and defeated the Bulgarians at Kilkis-Lahanas ( Kukush ), after which the mostly Bulgarian town was destroyed and its population expelled.

The Greek army destroyed altogether 161 Bulgarian villages and massacred thousands, in order to reduce the Bulgarian population of the region.

Since these first accounts, Bulgarian authorities had organized several population censuses: 1892, 1900, 1905, 1910, 1920, 1926, 1934, 1946, 1956, 1965, 1975, 1985, 1992, 2001 and 2011.

Some small portions of territories with Albanian majority remained outside the new borders and contact between the two parts was practically impossible: the Albanian population under the Bulgarian rule was heavily oppressed.

Use of the name " Sklavines " as a nation on its own was discontinued in Byzantine records after circa 836 as those Slavs in the Macedonia region became a population in the First Bulgarian Empire.

However, the Bulgarian army was partially recruited from the local population, which formed as much as 40 % to 60 % of the soldiers in certain battalions.

On 11 March 1943, Skopje's entire Jewish population of 3, 286 was transferred by Bulgarian occupying forces to the Nazis and deported to the gas chambers of Treblinka concentration camp in German-occupied Poland.

Most of the Bulgarian and Greek population are Christians, while most of the Turkish inhabitants of Thrace are Muslims.

Between 1812 and 1846, the Bulgarian and Gagauz population migrated to the Russian Empire via the River Danube, after living many years under oppressive Ottoman rule, and settled in southern Bessarabia.

No evidence remains of major resistance or any uprising of the Bulgarian population or nobility in the first decade after the establishment of Byzantine rule.

Dissatisfaction about the taxation policy led in 1066 the Aromanian and Bulgarian population of Thessaly to revolt against the Byzantine Empire under the leadership of a local lord, Nikoulitzas Delphinas.

Varna (, pronounced ) is the largest city and seaside resort on the Bulgarian Black Sea Coast and the third-largest city in Bulgaria after Sofia and Plovdiv with a population of 334, 870 inhabitants as of February, 2011.

A major port, agricultural, trade and shipbuilding centre for the Ottoman Empire in the 16th – 17th century, preserving a significant and economically active Bulgarian population, Varna was later made one of the Quadrilateral Fortresses ( along with Rousse, Shumen, and Silistra ) severing Dobruja from the rest of Bulgaria and containing Russia in the Russo-Turkish wars.

Since December 2006, various sources, including the Bulgarian National Television, national newspapers, research agencies, the mayor's office, and local police, claim that Varna has a population by present address of over 500, 000, making it the nation's second-largest city.

Since the late 10th century, the names " Bulgarians " and " Bulgarian " got prevalence and became permanent designations for the local population, both in the literature and in the spoken language.

The gradual Christianization of the Bulgarian population, the fact that the service was initially practiced in Greek, which only the elite knew, resulted in a low level of understanding of the religion among the peasantry.

Dobrogea's population is especially diverse, and there exist elements of traditional Tartar, Ukrainian, Turkish and Bulgarian music among those populations.

As a result, at the turn of the 21st century the Bulgarian population was widely expected to decline from a 1990 high of nine million to some five million within a generation.

In 1040 an uprising broke out in the area around Durrës under the leadership of the soldier Tihomir following the discontent of the Bulgarian population by the heavy taxes required by the Byzantine administration.

The other part of the Rhodopes was annexed as a result of the First Balkan War ( 1912 – 1913 ) but after the Second Balkan War ( 1913 ) and the First World War ( 1914 – 1918 ) the southern slopes of the mountain was occupied by Greece and the Bulgarian population of the area was forced to flee to Bulgaria.

However, Bulgarian Helsinki Committee stated that the vast majority of the Slavic population in Pirin Macedonia has a Bulgarian national self-consciousness and a regional Macedonian identity similar to the Macedonian regional identity in Greek Macedonia.

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# The numerous Romanian substratum words which have cognates in Bulgarian may derive from Thracian, which may have been a different language from Dacian ( see below, Thracian ).

# Autonomous Language Learning The Autonomous Language Learning ( ALL ) project, is building Blended Learning language courses in four European languages ( Turkish, Romanian, Bulgarian and Lithuanian ).

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# Bulgarian Greek Catholic Church ( 1861 )-apostolic exarchate: Sofia ,( 10, 107 ), Bulgaria

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# One of the first names of the organisation was " Bulgarian Macedonian-Adrianople Revolutionary Committees " ( BMARC оr БМОРК ), which was later changed to Secret Macedonian-Adrianople Revolutionary Organisation ( SMARO, ТМОРО ).

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