1.
Bulgaria
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Bulgaria, officially the Republic of Bulgaria, is a country in southeastern Europe. It is bordered by Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, with a territory of 110,994 square kilometres, Bulgaria is Europes 16th-largest country. Organised prehistoric cultures began developing on current Bulgarian lands during the Neolithic period and its ancient history saw the presence of the Thracians, Greeks, Persians, Celts, Romans, Goths, Alans and Huns. With the downfall of the Second Bulgarian Empire in 1396, its territories came under Ottoman rule for five centuries. The Russo-Turkish War of 1877–78 led to the formation of the Third Bulgarian State, the following years saw several conflicts with its neighbours, which prompted Bulgaria to align with Germany in both world wars. In 1946 it became a one-party socialist state as part of the Soviet-led Eastern Bloc, in December 1989 the ruling Communist Party allowed multi-party elections, which subsequently led to Bulgarias transition into a democracy and a market-based economy. Bulgarias population of 7.2 million people is predominantly urbanised, most commercial and cultural activities are centred on the capital and largest city, Sofia. The strongest sectors of the economy are industry, power engineering. The countrys current political structure dates to the adoption of a constitution in 1991. Bulgaria is a parliamentary republic with a high degree of political, administrative. Human activity in the lands of modern Bulgaria can be traced back to the Paleolithic, animal bones incised with man-made markings from Kozarnika cave are assumed to be the earliest examples of symbolic behaviour in humans. Organised prehistoric societies in Bulgarian lands include the Neolithic Hamangia culture, Vinča culture, the latter is credited with inventing gold working and exploitation. Some of these first gold smelters produced the coins, weapons and jewellery of the Varna Necropolis treasure and this site also offers insights for understanding the social hierarchy of the earliest European societies. Thracians, one of the three primary groups of modern Bulgarians, began appearing in the region during the Iron Age. In the late 6th century BC, the Persians conquered most of present-day Bulgaria, and kept it until 479 BC. After the division of the Roman Empire in the 5th century the area fell under Byzantine control, by this time, Christianity had already spread in the region. A small Gothic community in Nicopolis ad Istrum produced the first Germanic language book in the 4th century, the first Christian monastery in Europe was established around the same time by Saint Athanasius in central Bulgaria. From the 6th century the easternmost South Slavs gradually settled in the region, in 680 Bulgar tribes under the leadership of Asparukh moved south across the Danube and settled in the area between the lower Danube and the Balkan, establishing their capital at Pliska
2.
Vehicle registration plates of Bulgaria
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The characters displayed in the main field of the plate are, a one- or two-letter province code four numerals a final two-letter code, known as the series. The format is thus XX NNNN YY, where XX is the code, NNNN is the serial number. Since 1992, only glyphs that are common to both the Cyrillic and the Latin alphabets have been used on Bulgarian plates. In Bulgarian order, these are, А, В, Е, К, М, Н, О, Р, С, Т, У, Х, all of these are used as part of the province codes. Only nine letters are used in the series, of which А is the only vowel, the three that are not used in the series, are Е, reserved exclusively for trailers and caravans, О and У. The format X AAAAAA may be used in vanity plates, where A represents either letters or numbers chosen by the owner, the price of such a custom plate is a bit over €3,500, so these are rare. Not counting the Е series, which is reserved for trailers, nor the vanity plates with no series letters and this total ran out in Sofia in late 2005, and was replaced with СА in early 2006, In 2014, CB begun to be used. Note that the number 0 is written normally, while the letter O is egg-shaped, black letters on a white background, in the format, X NN-NN. State vehicles retained the black on white format, while private vehicles were given black plates with white lettering, in early 80s, after all the combinations with the letter C were exhausted in Sofia, a new format was introduced in the capital beginning with A, namely AYY-NNNN. Plates with the combinations AAB-NNNN and ABC-NNNN were issued before the standard was changed again in 1986. A new issue of plates is introduced with the format of X NNNN Y. Yellow for private plates, white for state-owned vehicles, with previous-style plates no longer valid and these new plates used ISO7591 standard font & size and had reflective surfaces. A similar system is used in Greece, Ukraine, Russia, Belarus, Bosnia and Herzegovina, regions are as per ISO 3166-2, BG. The new 1992 issue of plates used a background, in the format X NNNN Y. All former yellow background plates became invalid, in 1993, The hyphens/stops between letter and number blocks were also phased out and also became invalid in 1993. During the mid-1990s, the X NNNN Y combinations began to run out in many provinces, between 2000-2008, The left-hand blue band Bulgaria flag was phased in, eventually becoming a legal requirement on 1 Jul 2006. These plates were all in the X NNNN YY format, but the shape of the letters was changed to the current standard – namely and these plates all began with the series AA, thereby repeating some combinations that had already existed before, albeit without the EU strip. After October 2008 On the 1st Jan 2007 Bulgaria and Romania joined the European Union, usually, the expiry date is inscribed on the red strip
3.
Arabs
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Arabs are an ethnic group inhabiting the Arab world. They primarily live in the Arab states in Western Asia, North Africa, the Horn of Africa, the Arabs are first mentioned in the mid-ninth century BCE as a tribal people dwelling in the central Arabian Peninsula. The Arabs appear to have been under the vassalage of the Neo-Assyrian Empire, tradition holds that Arabs descend from Ishmael, the son of Abraham. The Arabian Desert is the birthplace of Arab, there are other Arab groups as well that spread in the land and existed for millennia. Before the expansion of the Caliphate, Arab referred to any of the largely nomadic Semitic people from the northern to the central Arabian Peninsula and Syrian Desert. Presently, Arab refers to a number of people whose native regions form the Arab world due to spread of Arabs throughout the region during the early Arab conquests of the 7th and 8th centuries. The Arabs forged the Rashidun, Umayyad and the Abbasid caliphates, whose borders reached southern France in the west, China in the east, Anatolia in the north, and this was one of the largest land empires in history. The Great Arab Revolt has had as big an impact on the modern Middle East as the World War I, the war signaled the end of the Ottoman Empire. They are modern states and became significant as distinct political entities after the fall and defeat, following adoption of the Alexandria Protocol in 1944, the Arab League was founded on 22 March 1945. The Charter of the Arab League endorsed the principle of an Arab homeland whilst respecting the sovereignty of its member states. Beyond the boundaries of the League of Arab States, Arabs can also be found in the global diaspora, the ties that bind Arabs are ethnic, linguistic, cultural, historical, identical, nationalist, geographical and political. The Arabs have their own customs, language, architecture, art, literature, music, dance, media, cuisine, dress, society, sports, the total number of Arabs are an estimated 450 million. This makes them the second largest ethnic group after the Han Chinese. Arabs are a group in terms of religious affiliations and practices. In the pre-Islamic era, most Arabs followed polytheistic religions, some tribes had adopted Christianity or Judaism, and a few individuals, the hanifs, apparently observed monotheism. Today, Arabs are mainly adherents of Islam, with sizable Christian minorities, Arab Muslims primarily belong to the Sunni, Shiite, Ibadi, Alawite, Druze and Ismaili denominations. Arab Christians generally follow one of the Eastern Christian Churches, such as the Maronite, Coptic Orthodox, Greek Orthodox, Greek Catholic, or Chaldean churches. Listed among the booty captured by the army of king Shalmaneser III of Assyria in the Battle of Qarqar are 1000 camels of Gi-in-di-buu the ar-ba-a-a or Gindibu belonging to the Arab
4.
Muhammad al-Idrisi
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Muhammed al-Idrisi was born in Ceuta, then belonging to the Almoravids. Al-Idrisi was born into the large Hammudid family of North Africa and Al-Andalus, Al-Idrisi was born in the city of Ceuta, where his great-grandfather had been forced to settle after the fall of Hammudid Málaga to the Zirids of Granada. He spent much of his life travelling through North Africa and Al-Andalus. He visited Anatolia when he was barely 16 and his travels took him to many parts of Europe including Portugal, the Pyrenees, the French Atlantic coast, Hungary, and Jórvík. Because of conflict and instability in Al-Andalus al-Idrisi joined contemporaries such as Abu al-Salt in Sicily, for Roger it was inscribed on a massive disc of solid silver, two metres in diameter. On the geographical work of al-Idrisi, S. P. Scott wrote in 1904, not only is its historical information most interesting and valuable, but its descriptions of many parts of the earth are still authoritative. For three centuries geographers copied his maps without alteration, the mechanical genius of the author was not inferior to his erudition. Al-Idrisi inspired Islamic geographers such as Ibn Battuta, Ibn Khaldun and his map also inspired Christopher Columbus and Vasco Da Gama. Al-Idrisi in his famous Tabula Rogeriana mentioned Irlandah-al-Kabirah, according to him, from the extremity of Iceland to that of Great Ireland, the sailing time was one day. Although historians note that both al-Idrisi and the Norse tend to understate distances, the location this reference is thought to have possibly pointed to. Al-Idrisi mentioned that Chinese junks carried leather, swords, iron and he mentions the glassware of the city of Hangzhou and labels Quanzhous silk as the best. As well as the maps, al-Idrisi produced a compendium of information with the title Kitab nuzhat al-mushtaq fikhtiraq al-afaq. The title has been translated as The book of pleasant journeys into faraway lands or The pleasure of him who longs to cross the horizons and it has been preserved in nine manuscripts, seven of which contain maps. The translated title of this work attracted favourable comment from the team selecting lists of names for features expected to be discovered by the New Horizons probe reconnoitring the Pluto system, the Al-Idrisi Montes is a geographical feature in that system named after him. This was one of the first Arabic books ever printed, the first translation from the original Arabic was into Latin. The Maronites Gabriel Sionita and Joannes Hesronita translated a version of the text which was published in Paris in 1619 with the rather misleading title of Geographia nubiensis. Not until the middle of the 19th century was a translation of the Arabic text published. This was a translation into French by Pierre Amédée Jaubert, more recently sections of the text have been translated for particular regions
5.
Pleven
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Pleven is the seventh most populous city in Bulgaria. Located in the part of the country, it is the administrative centre of Pleven Province. It is the biggest economic center in Northwestern Bulgaria, at the end of 2015 its population is 99628. The name comes from the Slavic word plevnya or from plevel, meaning weed, Pleven is located in an agricultural region in the very heart of the Danubian Plain, the historical region of Moesia, surrounded by low limestone hills, the Pleven Heights. The citys central location in Northern Bulgaria defines its importance as a big administrative, economic, political, cultural, Pleven is located 170 kilometres away from the capital city of Sofia,320 km west of the Bulgarian Black Sea Coast and 50 km south of the Danube. The river Vit flows near the town and the tiny Tuchenitsa river crosses it, winters are cold with much snow, sometimes temperatures fall below −20 °C. Springs are warm temperatures around 20 °C. Summers are very hot and temperatures can exceed 38–40 °C, the average annual temperature is around 13 °C. http, //www. stringmeteo. com The earliest traces of human settlement in the area date from the 5th millennium BC, the Neolithic. Numerous archaeological findings, among them the Nikolaevo treasure found in Bulgaria, evidence for the culture of the Thracians. In the beginning of the new era, the became part of the Roman province of Moesia. It later evolved into a fortress, one of the most valued archaeological monuments in Bulgaria from the period is the Early Christian basilica from the fourth century discovered near the modern city. During the Middle Ages, Pleven was a stronghold of the First. During the Ottoman rule, Pleven, known as Plevne in Ottoman Turkish, preserved its Bulgarian appearance, many churches, schools and bridges were built at the time of the Bulgarian National Revival. In 1825, the first secular school in the town was opened, followed by the first girls school in Bulgaria in 1840, Pleven was the place where the Bulgarian national hero Vasil Levski established the first revolutionary committee in 1869, part of his national revolutionary network. The city was a battle scene during the Russo-Turkish War of 1877–1878 that Russian Tsar Alexander II held for the purpose of the liberation of Bulgaria. It cost the Russians and Romanians 5 months and 38,000 casualties to take the town after four assaults, without this fortress slowing the Russian onslaught, which gave the Great Powers time to intercede, Constantinople would have been repossessed by a Christian army once more. The events of the Russo-Turkish War proved crucial for the development of Pleven as a key town of central northern Bulgaria, the town experienced significant demographic and economic growth in the following years, gradually establishing itself as a cultural centre of the region. The Bulgarian Agrarian National Union, a leading interwar party representing the Bulgarian peasantry, was founded in the town in December 1899, prior to the Bulgarian orthographic reform of 1945, the name of the town was spelled Плѣвенъ in Cyrillic
6.
Iron Age
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The Iron Age is an archaeological era, referring to a period of time in the prehistory and protohistory of the Old World when the dominant toolmaking material was iron. It is commonly preceded by the Bronze Age in Europe and Asia with exceptions, meteoric iron has been used by humans since at least 3200 BC. Ancient iron production did not become widespread until the ability to smelt ore, remove impurities. The start of the Iron Age proper is considered by many to fall between around 1200 BC and 600 BC, depending on the region, the earliest known iron artifacts are nine small beads dated to 3200 BC, which were found in burials at Gerzeh, Lower Egypt. They have been identified as meteoric iron shaped by careful hammering, meteoric iron, a characteristic iron–nickel alloy, was used by various ancient peoples thousands of years before the Iron Age. Such iron, being in its metallic state, required no smelting of ores. Smelted iron appears sporadically in the record from the middle Bronze Age. While terrestrial iron is abundant, its high melting point of 1,538 °C placed it out of reach of common use until the end of the second millennium BC. Tins low melting point of 231, similarly, recent archaeological remains of iron working in the Ganges Valley in India have been tentatively dated to 1800 BC. By the Middle Bronze Age, increasing numbers of smelted iron objects appeared in the Middle East, Southeast Asia, African sites are turning up dates as early as 1200 BC. Modern archaeological evidence identifies the start of iron production in around 1200 BC. Between 1200 BC and 1000 BC, diffusion in the understanding of iron metallurgy and use of objects was fast. As evidence, many bronze implements were recycled into weapons during this time, more widespread use of iron led to improved steel-making technology at lower cost. Thus, even when tin became available again, iron was cheaper, stronger, and lighter, and forged iron implements superseded cast bronze tools permanently. Increasingly, the Iron Age in Europe is being seen as a part of the Bronze Age collapse in the ancient Near East, in ancient India, ancient Iran, and ancient Greece. In other regions of Europe, the Iron Age began in the 8th century BC in Central Europe, the Near Eastern Iron Age is divided into two subsections, Iron I and Iron II. Iron I illustrates both continuity and discontinuity with the previous Late Bronze Age, during the Iron Age, the best tools and weapons were made from steel, particularly alloys which were produced with a carbon content between approximately 0. 30% and 1. 2% by weight. Steel weapons and tools were nearly the same weight as those of bronze, however, steel was difficult to produce with the methods available, and alloys that were easier to make, such as wrought iron, were more common in lower-priced goods
7.
Ancient Rome
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In its many centuries of existence, the Roman state evolved from a monarchy to a classical republic and then to an increasingly autocratic empire. Through conquest and assimilation, it came to dominate the Mediterranean region and then Western Europe, Asia Minor, North Africa and it is often grouped into classical antiquity together with ancient Greece, and their similar cultures and societies are known as the Greco-Roman world. Ancient Roman civilisation has contributed to modern government, law, politics, engineering, art, literature, architecture, technology, warfare, religion, language and society. Rome professionalised and expanded its military and created a system of government called res publica, the inspiration for modern republics such as the United States and France. By the end of the Republic, Rome had conquered the lands around the Mediterranean and beyond, its domain extended from the Atlantic to Arabia, the Roman Empire emerged with the end of the Republic and the dictatorship of Augustus Caesar. 721 years of Roman-Persian Wars started in 92 BC with their first war against Parthia and it would become the longest conflict in human history, and have major lasting effects and consequences for both empires. Under Trajan, the Empire reached its territorial peak, Republican mores and traditions started to decline during the imperial period, with civil wars becoming a prelude common to the rise of a new emperor. Splinter states, such as the Palmyrene Empire, would divide the Empire during the crisis of the 3rd century. Plagued by internal instability and attacked by various migrating peoples, the part of the empire broke up into independent kingdoms in the 5th century. This splintering is a landmark historians use to divide the ancient period of history from the pre-medieval Dark Ages of Europe. King Numitor was deposed from his throne by his brother, Amulius, while Numitors daughter, Rhea Silvia, because Rhea Silvia was raped and impregnated by Mars, the Roman god of war, the twins were considered half-divine. The new king, Amulius, feared Romulus and Remus would take back the throne, a she-wolf saved and raised them, and when they were old enough, they returned the throne of Alba Longa to Numitor. Romulus became the source of the citys name, in order to attract people to the city, Rome became a sanctuary for the indigent, exiled, and unwanted. This caused a problem for Rome, which had a large workforce but was bereft of women, Romulus traveled to the neighboring towns and tribes and attempted to secure marriage rights, but as Rome was so full of undesirables they all refused. Legend says that the Latins invited the Sabines to a festival and stole their unmarried maidens, leading to the integration of the Latins, after a long time in rough seas, they landed at the banks of the Tiber River. Not long after they landed, the men wanted to take to the sea again, one woman, named Roma, suggested that the women burn the ships out at sea to prevent them from leaving. At first, the men were angry with Roma, but they realized that they were in the ideal place to settle. They named the settlement after the woman who torched their ships, the Roman poet Virgil recounted this legend in his classical epic poem the Aeneid
8.
Thracians
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The Thracians were a group of Indo-European tribes inhabiting a large area in southeastern Europe. They spoke the Thracian language – a scarcely attested branch of the Indo-European language family, the study of Thracians and Thracian culture is known as Thracology. Thracians are one of the three primary groups of modern Bulgarians. The first historical record about the Thracians is found in the Iliad, the ethnonym Thracian comes from Ancient Greek Θρᾷξ or Θρᾴκιος/Ionic, Θρηίκιος, and the toponym Thrace comes from Θρᾴκη/Ion. These forms are all exonyms as applied by the Greeks, in Greek mythology, Thrax was regarded as one of the reputed sons of the god Ares. In the Alcestis, Euripides mentions that one of the names of Ares himself was Thrax since he was regarded as the patron of Thrace, the origins of the Thracians remain obscure, in the absence of written historical records. Evidence of proto-Thracians in the period depends on artifacts of material culture. Leo Klejn identifies proto-Thracians with the multi-cordoned ware culture that was pushed away from Ukraine by the advancing timber grave culture and we speak of proto-Thracians from which during the Iron Age Dacians and Thracians begin developing. Divided into separate tribes, the Thracians did not manage to form a political organization until the Odrysian state was founded in the fifth century BC. A strong Dacian state appeared in the first century BC, during the reign of King Burebista, including the Illyrians, the mountainous regions were home to various peoples regarded as warlike and ferocious Thracian tribes, while the plains peoples were apparently regarded as more peaceable. Thracians inhabited parts of the ancient provinces of Thrace, Moesia, Macedonia, Dacia, Scythia Minor, Sarmatia, Bithynia, Mysia, Pannonia, and other regions of the Balkans and Anatolia. This area extended over most of the Balkans region, and the Getae north of the Danube as far as beyond the Bug and including Panonia in the west. Aligning themselves in kingdoms and tribes, they never displayed any form of unity beyond short. Similar to the Celtic and Slavic tribes, most people are thought to have lived simply in small fortified villages, although the concept of an urban center was not developed until the Roman period, various larger fortifications which also served as regional market centers were numerous. Yet, in general, despite Greek colonization in such areas as Byzantium, Apollonia and other cities, the first Greek colonies in Thrace were founded in the eighth century BC. Thrace south of the Danube was ruled for half a century by the Persians under Darius the Great. In the first decade of the sixth century BC, the Persians invaded Thrace, Thracians were forced to join the invasions of European Scythia and Greece. According to Herodotus, the Bithynian Thracians also had to contribute a large contingent to Xerxes invasion of Greece in 480 BC, Darius left in Europe one of his commanders named Megabazus whose task was to accomplish conquests in the Balkans
9.
Mortar (masonry)
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In its broadest sense mortar includes pitch, asphalt, and soft mud or clay, such as used between mud bricks. Mortar comes from Latin mortarium meaning crushed, mortars are typically made from a mixture of sand, a binder, and water. The most common binder since the early 20th century is Portland cement, there are several types of cement mortars and additives. The first mortars were made of mud and clay, because of a lack of stone and an abundance of clay, Babylonian constructions were of baked brick, using lime or pitch for mortar. According to Roman Ghirshman, the first evidence of using a form of mortar was at the Mehrgarh of Baluchistan in Pakistan. The ancient sites of Harappan civilization of third millennium BCE are built with kiln-fired bricks, gypsum mortar, also called plaster of Paris, was used in the construction of the Egyptian pyramids and many other ancient structures. It is made from gypsum, which requires a firing temperature. It is therefore easier to make lime mortar and sets up much faster which may be a reason it was used as the typical mortar in ancient, brick arch. Gypsum mortar is not as durable as other mortars in damp conditions, in early Egyptian pyramids, which were constructed during the Old Kingdom, the limestone blocks were bound by mortar of mud and clay, or clay and sand. In later Egyptian pyramids, the mortar was made of gypsum or lime. Gypsum mortar was essentially a mixture of plaster and sand and was quite soft, in the Indian subcontinent, multiple cement types have been observed in the sites of the Indus Valley Civilization, such as the Mohenjo-daro city-settlement that dates to earlier than 2600 BCE. Bitumen mortar was used at a lower-frequency, including in the Great Bath at Mohenjo-daro. Historically, building with concrete and mortar next appeared in Greece, the excavation of the underground aqueduct of Megara revealed that a reservoir was coated with a pozzolanic mortar 12 mm thick. This aqueduct dates back to c.500 BCE, pozzolanic mortar is a lime based mortar, but is made with an additive of volcanic ash that allows it to be hardened underwater, thus it is known as hydraulic cement. The Greeks obtained the volcanic ash from the Greek islands Thira and Nisiros, or from the then Greek colony of Dicaearchia near Naples, the Romans later improved the use and methods of making what became known as pozzolanic mortar and cement. Even later, the Romans used a mortar without pozzolana using crushed terra cotta, introducing aluminum oxide and this mortar was not as strong as pozzolanic mortar, but, because it was denser, it better resisted penetration by water. Hydraulic mortar was not available in ancient China, possibly due to a lack of volcanic ash, around 500 CE, sticky rice soup was mixed with slaked lime to make an inorganic−organic composite mortar that had more strength and water resistance than lime mortar. It is not understood how the art of making hydraulic mortar and cement, during the Middle Ages when the Gothic cathedrals were being built, the only active ingredient in the mortar was lime
10.
First Bulgarian Empire
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The First Bulgarian Empire was a medieval Bulgarian state that existed in southeastern Europe between the 7th and 11th centuries AD. It was founded circa 681 when Bulgar tribes led by Asparukh moved to the north-eastern Balkans, there they secured Byzantine recognition of their right to settle south of the Danube by defeating – possibly with the help of local South Slavic tribes – the Byzantine army led by Constantine IV. At the height of its power, Bulgaria spread from the Danube Bend to the Black Sea, as the state solidified its position in the Balkans, it entered into a centuries-long interaction, sometimes friendly and sometimes hostile, with the Byzantine Empire. Bulgaria emerged as Byzantiums chief antagonist to its north, resulting in several wars, Byzantium had a strong cultural influence on Bulgaria, which also led to the eventual adoption of Christianity in 864. After the disintegration of the Avar Khaganate, the country expanded its territory northwest to the Pannonian Plain, later the Bulgarians confronted the advance of the Pechenegs and Cumans, and achieved a decisive victory over the Magyars, forcing them to establish themselves permanently in Pannonia. During the late 9th and early 10th centuries, Simeon I achieved a string of victories over the Byzantines, thereafter, he was recognized with the title of Emperor, and proceeded to expand the state to its greatest extent. After the annihilation of the Byzantine army in the battle of Anchialus in 917, the Byzantines, however, eventually recovered, and in 1014, under Basil II, inflicted a crushing defeat on the Bulgarians at the Battle of Kleidion. By 1018, the last Bulgarian strongholds had surrendered to the Byzantine Empire, and it was succeeded by the Second Bulgarian Empire in 1185. After the adoption of Christianity, Bulgaria became the center of Slavic Europe. Old Bulgarian became the lingua franca of much of Eastern Europe, in 927, the fully independent Bulgarian Patriarchate was officially recognized. The Bulgars and other tribes in the empire gradually adopted an essentially foreign Slavic language. Since the late 9th century, the names Bulgarians and Bulgarian gained prevalence and became permanent designations for the local population, the First Bulgarian Empire became known simply as Bulgaria since its recognition by the Byzantine Empire in 681. Some historians use the terms Danube Bulgaria, First Bulgarian State, during its early existence, the country was also called the Bulgar state or Bulgar qaghanate. Between 864 and 917/927, the country was known as the Principality of Bulgaria or Knyazhestvo Bulgaria, in English language sources, the country is often known as the Bulgarian Empire. The eastern Balkan Peninsula was originally inhabited by the Thracians who were a group of Proto-Indo-European tribes, the whole region as far north as the Danube River was gradually incorporated into the Roman Empire by the 1st century AD. The decline of the Roman Empire after the 3rd century AD, nonetheless, it never relinquished the claim to the whole region up to the Danube. A series of administrative, legislative, military and economic reforms somewhat improved the situation, the group of Slavs that came to be known as the South Slavs was divided into Antes and Sclaveni who spoke the same language. The Slavic incursions in the Balkans increased during the half of Justinian Is reign and while these were initially pillaging raids
Bulgaria
Chisholm, Hugh, ed. (1911). "Shumla". Encyclopædia Britannica. 24 (11th ed.). Cambridge University Press. p. 1023.
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