Question: What are the beginning and ending years of the force that conquered ancient England around AD 43?

<P0-S0> The Roman Empire (Latin: Imperium Rōmānum, Classical Latin: (ɪmˈpɛ. <P0-S1> ri. <P0-S2> ũː roːˈmaː. <P0-S3> nũː); Koine and Medieval Greek: Βασιλεία τῶν Ῥωμαίων, tr. <P0-S4> Basileia tōn Rhōmaiōn) was the post-Roman Republic period of the ancient Roman civilization, with a government headed by emperors and large territorial holdings around the Mediterranean Sea in Europe, Africa and Asia. <P0-S5> The city of Rome was the largest city in the world c. 100 BC -- c. AD 400, with Constantinople (New Rome) becoming the largest around AD 500, and the Empire's population grew to an estimated 50 to 90 million inhabitants (roughly 20% of the world's population at the time). <P0-S6> The 500 - year - old republic which preceded it had been severely destabilized in a series of civil wars and political conflict, during which Julius Caesar was appointed as perpetual dictator and then assassinated in 44 BC. <P0-S7> Civil wars and executions continued, culminating in the victory of Octavian, Caesar's adopted son, over Mark Antony and Cleopatra at the Battle of Actium in 31 BC and the annexation of Egypt. <P0-S8> Octavian's power was then unassailable and in 27 BC the Roman Senate formally granted him overarching power and the new title Augustus, effectively marking the end of the Roman Republic. <SEP> <P1-S0> viking invasions began in the 9th century, followed by more permanent settlements, particularly along the east coast of ireland, the west coast of modern-day scotland and the isle of man. <P1-S1> though the vikings were eventually neutralised in ireland, their influence remained in the cities of dublin, cork, limerick, waterford and wexford. <P1-S2> england however was slowly conquered around the turn of the first millennium ad, and eventually became a feudal possession of denmark. <P1-S3> the relations between the descendants of vikings in england and counterparts in normandy, in northern france, lay at the heart of a series of events that led to the norman conquest of england in 1066. the remnants of the duchy of normandy, which conquered england, remain associated to the english crown as the channel islands to this day. <P1-S4> a century later the marriage of the future henry ii of england to eleanor of aquitaine created the angevin empire, partially under the french crown. <P1-S5> at the invitation of a provincial king and under the authority of pope adrian iv (the only englishman to be elected pope), the angevins invaded ireland in 1169. though initially intended to be kept as an independent kingdom, the failure of the irish high king to ensure the terms of the treaty of windsor led henry ii, as king of england, to rule as effective monarch under the title of lord of ireland. <P1-S6> this title was granted to his younger son but when henry's heir unexpectedly died the title of king of england and lord of ireland became entwined in one person. <SEP> <P2-S0> Hiberni (Ireland), Pictish (northern Britain) and Britons (southern Britain) tribes, all speaking Insular Celtic, inhabited the islands at the beginning of the 1st millennium AD. <P2-S1> The first Anglo-Saxons arrived as Roman power waned in the 5th century and eventually dominated the bulk of what is now England. <P2-S2> Viking invasions began in the 9th century, followed by more permanent settlements and political change—particularly in England. <P2-S3> The subsequent Norman conquest of England in 1066 and the later Angevin partial conquest of Ireland from 1169 led to the imposition of a new Norman ruling elite across much of Britain and parts of Ireland. <P2-S4> By the Late Middle Ages, Great Britain was separated into the Kingdoms of England and Scotland, while control in Ireland fluxed between Gaelic kingdoms, Hiberno-Norman lords and the English-dominated Lordship of Ireland, soon restricted only to The Pale. <P2-S5> Much of Brittonic-controlled Britain was conquered by the Roman Empire from AD 43. <P2-S6> The 1603 Union of the Crowns, Acts of Union 1707 and Acts of Union 1800 attempted to consolidate Britain and Ireland into a single political unit, the United Kingdom of Great Britain and Ireland, with the Isle of Man and the Channel Islands remaining as Crown Dependencies. <P2-S7> The expansion of the British Empire and migrations following the Irish Famine and Highland Clearances resulted in the distribution of the islands' population and culture throughout the world and a rapid de-population of Ireland in the second half of the 19th century. <P2-S8> Most of Ireland seceded from the United Kingdom after the Irish War of Independence and the subsequent Anglo-Irish Treaty (1919–1922), with six counties remaining in the UK as Northern Ireland. <SEP> <P3-S0> association football in itself does not have a classical history. <P3-S1> notwithstanding any similarities to other ball games played around the world fifa have recognised that no historical connection exists with any game played in antiquity outside europe. <P3-S2> the modern rules of association football are based on the mid-19th century efforts to standardise the widely varying forms of football played in the public schools of england. <P3-S3> the history of football in england dates back to at least the eighth century ad. <SEP> <P4-S0> The Anglo - Saxons, a collection of various Germanic peoples, established several kingdoms that became the primary powers in present - day England and parts of southern Scotland. <P4-S1> They introduced the Old English language, which largely displaced the previous British language. <P4-S2> The Anglo - Saxons warred with British successor states in Wales, Cornwall, and the Hen Ogledd (Old North; the Brythonic - speaking parts of northern England and southern Scotland), as well as with each other. <P4-S3> The end of Roman rule in Britain facilitated the Anglo - Saxon settlement of Britain, which historians often regard as the origin of England and of the English people. <P4-S4> Raids by Vikings became frequent after about AD 800, and the Norsemen settled in large parts of what is now England. <P4-S5> During this period, several rulers attempted to unite the various Anglo - Saxon kingdoms, an effort that led to the emergence of the Kingdom of England by the 10th century.