paragraph_text: The river has its sources in the eastern part of Belgorod Oblast, on the southeastern slopes of the Central Russian Upland. It flows in a northeasterly direction, and joins the Don some west of the town of Liski in Voronezh Oblast.

paragraph_text: The Roman Empire came to dominate the entire Mediterranean basin in a vast empire based on Roman law and Roman legions. It promoted trade, tolerance, and Greek culture. By 300 AD the Roman Empire was divided into the Western Roman Empire based in Rome, and the Eastern Roman Empire based in Constantinople. The attacks of the Germanic peoples of northern Europe led to the Fall of the Western Roman Empire in AD 476, a date which traditionally marks the end of the classical period and the start of the Middle Ages.

paragraph_text: The Seven Years' War was a global conflict fought between 1756 and 1763. It involved every European great power of the time and spanned five continents, affecting Europe, the Americas, West Africa, India, and the Philippines. The conflict split Europe into two coalitions, led by the Kingdom of Great Britain (including Prussia, Portugal, Hanover, and other small German states) on one side and the Kingdom of France (including the Austrian - led Holy Roman Empire, the Russian Empire, Bourbon Spain, and Sweden) on the other. Meanwhile, in India, the Mughal Empire, with the support of the French, tried to crush a British attempt to conquer Bengal.

paragraph_text: The Byzantine Empire, also referred to as the Eastern Roman Empire, was the continuation of the Roman Empire in the East during Late Antiquity and the Middle Ages, when its capital city was Constantinople (modern - day Istanbul, which had been founded as Byzantium). It survived the fragmentation and fall of the Western Roman Empire in the 5th century AD and continued to exist for an additional thousand years until it fell to the Ottoman Turks in 1453. During most of its existence, the empire was the most powerful economic, cultural, and military force in Europe. Both ``Byzantine Empire ''and`` Eastern Roman Empire'' are historiographical terms created after the end of the realm; its citizens continued to refer to their empire as the Roman Empire (Greek: Βασιλεία τῶν Ῥωμαίων, tr. Basileia tôn Rhōmaiōn; Latin: Imperium Romanum), or Romania (Ῥωμανία), and to themselves as ``Romans. ''

paragraph_text: Cordero Channel is a strait in British Columbia, Canada, located between the mainland and Vancouver Island, among the Discovery Islands north of the Strait of Georgia. Cordero Channel runs north of Sonora Island, East Thurlow Island, and part of West Thurlow Island. Its eastern end connects to the mouth of Bute Inlet and to Calm Channel, at Stuart Island. Its west end is marked by the mouth of Loughborough Inlet, beyond which the channel is called Chancellor Channel, which continues west to Johnstone Strait.

paragraph_text: As the Roman occupation of Britain was coming to an end, Constantine III withdrew the remains of the army, in reaction to the barbarian invasion of Europe. The Romano - British leaders were faced with an increasing security problem from seaborne raids, particularly by Picts on the East coast of England. The expedient adopted by the Romano - British leaders was to enlist the help of Anglo - Saxon mercenaries (known as foederati), to whom they ceded territory. In about 442 the Anglo - Saxons mutinied, apparently because they had not been paid. The Romano - British responded by appealing to the Roman commander of the Western empire, Aëtius for help (a document known as the Groans of the Britons), even though Honorius, the Western Roman Emperor, had written to the British civitas in or about 410 telling them to look to their own defence. There then followed several years of fighting between the British and the Anglo - Saxons. The fighting continued until around 500, when, at the Battle of Mount Badon, the Britons inflicted a severe defeat on the Anglo - Saxons.

paragraph_text: The earliest known use of the phrase Brytish Iles in the English language is dated 1577 in a work by John Dee. Today, this name is seen by some as carrying imperialist overtones although it is still commonly used. Other names used to describe the islands include the Anglo-Celtic Isles, Atlantic archipelago, British-Irish Isles, Britain and Ireland, UK and Ireland, and British Isles and Ireland. Owing to political and national associations with the word British, the Government of Ireland does not use the term British Isles and in documents drawn up jointly between the British and Irish governments, the archipelago is referred to simply as "these islands". Nonetheless, British Isles is still the most widely accepted term for the archipelago.

paragraph_text: The Seven Years' War was a global conflict fought between 1756 and 1763. It involved every European great power of the time and spanned five continents, affecting Europe, the Americas, West Africa, India, and the Philippines. The conflict split Europe into two coalitions, led by the Kingdom of Great Britain (including Prussia, Portugal, Hanover, and other small German states) on one side and the Kingdom of France (including the Austrian - led Holy Roman Empire, the Russian Empire, Bourbon Spain, and Sweden) on the other. Meanwhile, in India, some regional polities within the increasingly fragmented Mughal Empire, with the support of the French, tried to crush a British attempt to conquer Bengal.

paragraph_text: If the British Empire was now going to side with the Russian Empire, the Ottoman Empire had no choice but to cultivate a relationship with the Austro-Hungarian Empire, which was supported by the German Empire. In a few years these alignments became the Triple Entente and the Triple Alliance (already formed in 1882), which were in part a cause of World War I. By its end in 1918 three empires were gone, a fourth was about to fall to revolution, and two more, the British and French, were forced to yield in revolutions started under the aegis of their own ideologies.

paragraph_text: The inhabitants of the British Isles have been drinking ale since the Bronze Age, but it was with the arrival of the Roman Empire in its shores in the 1st Century, and the construction of the Roman road networks that the first inns, called tabernae, in which travellers could obtain refreshment began to appear. After the departure of Roman authority in the 5th Century and the fall of the Romano-British kingdoms, the Anglo-Saxons established alehouses that grew out of domestic dwellings, the Anglo-Saxon alewife would put a green bush up on a pole to let people know her brew was ready. These alehouses quickly evolved into meeting houses for the folk to socially congregate, gossip and arrange mutual help within their communities. Herein lies the origin of the modern public house, or "Pub" as it is colloquially called in England. They rapidly spread across the Kingdom, becoming so commonplace that in 965 King Edgar decreed that there should be no more than one alehouse per village.

paragraph_text: The Battle of the Tanais River in 373 AD between the Huns and the Alans, was fought on the traditional border between Asia and Europe. The Huns were victorious.

paragraph_text: The Portuguese language is derived from the Latin spoken by the romanized Pre-Roman peoples of the Iberian Peninsula around 2000 years ago—particularly the Celts, Tartessians, Lusitanians and Iberians. In the 15th and 16th centuries, the language spread worldwide as Portugal established a colonial and commercial empire between 1415 and 1999. Portuguese is now spoken as a native language in five different continents, with Brazil accounting for the largest number of native Portuguese speakers of any country (200 million speakers in 2012).

paragraph_text: The British Trust for Ornithology (BTO) is an organisation founded in 1932 for the study of birds in the British Isles.

paragraph_text: The French planned to invade the British Isles during 1759 by accumulating troops near the mouth of the Loire and concentrating their Brest and Toulon fleets. However, two sea defeats prevented this. In August, the Mediterranean fleet under Jean-François de La Clue-Sabran was scattered by a larger British fleet under Edward Boscawen at the Battle of Lagos. In the Battle of Quiberon Bay on 20 November, the British admiral Edward Hawke with 23 ships of the line caught the French Brest fleet with 21 ships of the line under Marshal de Conflans and sank, captured, or forced many of them aground, putting an end to the French plans.

paragraph_text: The culture of Greece has evolved over thousands of years, beginning in Mycenaean Greece and continuing most notably into Classical Greece, through the influence of the Roman Empire and its Greek Eastern continuation, the Eastern Roman or Byzantine Empire. Other cultures and nations, such as the Latin and Frankish states, the Ottoman Empire, the Venetian Republic, the Genoese Republic, and the British Empire have also left their influence on modern Greek culture, although historians credit the Greek War of Independence with revitalising Greece and giving birth to a single, cohesive entity of its multi-faceted culture.

paragraph_text: The transfer of sovereignty over Hong Kong from the United Kingdom to China, referred to as ``the Handover ''internationally or`` the Return'' in China, took place on 1 July 1997. The landmark event marked the end of British administration in Hong Kong, and is often regarded as marking the end of the British Empire.

paragraph_text: The United States Coast Guard Station Belle Isle is located on Belle Isle, Michigan, near Detroit and the mouth of the Detroit River.

paragraph_text: The Eastern Roman Empire – today conventionally named the Byzantine Empire, a name not in use during its own time – became increasingly influenced by Greek culture after the 7th century, when Emperor Heraclius (AD 575 - 641) decided to make Greek the empire's official language. Certainly from then on, but likely earlier, the Roman and Greek cultures were virtually fused into a single Greco-Roman world. Although the Latin West recognized the Eastern Empire's claim to the Roman legacy for several centuries, after Pope Leo III crowned Charlemagne, king of the Franks, as the "Roman Emperor" on 25 December 800, an act which eventually led to the formation of the Holy Roman Empire, the Latin West started to favour the Franks and began to refer to the Eastern Roman Empire largely as the Empire of the Greeks (Imperium Graecorum).

paragraph_text: By the 6th century, the Rhine was within the borders of Francia. In the 9th, it formed part of the border between Middle and Western Francia, but in the 10th century, it was fully within the Holy Roman Empire, flowing through Swabia, Franconia and Lower Lorraine. The mouths of the Rhine, in the county of Holland, fell to the Burgundian Netherlands in the 15th century; Holland remained contentious territory throughout the European wars of religion and the eventual collapse of the Holy Roman Empire, when the length of the Rhine fell to the First French Empire and its client states. The Alsace on the left banks of the Upper Rhine was sold to Burgundy by Archduke Sigismund of Austria in 1469 and eventually fell to France in the Thirty Years' War. The numerous historic castles in Rhineland-Palatinate attest to the importance of the river as a commercial route.

paragraph_text: Anglo-Saxons arrived as Roman power waned in the 5th century AD. Initially, their arrival seems to have been at the invitation of the Britons as mercenaries to repulse incursions by the Hiberni and Picts. In time, Anglo-Saxon demands on the British became so great that they came to culturally dominate the bulk of southern Great Britain, though recent genetic evidence suggests Britons still formed the bulk of the population. This dominance creating what is now England and leaving culturally British enclaves only in the north of what is now England, in Cornwall and what is now known as Wales. Ireland had been unaffected by the Romans except, significantly, having been Christianised, traditionally by the Romano-Briton, Saint Patrick. As Europe, including Britain, descended into turmoil following the collapse of Roman civilisation, an era known as the Dark Ages, Ireland entered a golden age and responded with missions (first to Great Britain and then to the continent), the founding of monasteries and universities. These were later joined by Anglo-Saxon missions of a similar nature.

Question: What happened to the British Isles and the continent on which the mouth of the Tikhaya Sosna is located after the Roman empire ended?
Answer: the Dark Ages