Question: when did the foreign group that conquered the country where the experiment took place around AD 43 began to fall?

<P0-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. <P0-S1> The first Anglo-Saxons arrived as Roman power waned in the 5th century and eventually dominated the bulk of what is now England. <P0-S2> Much of Brittonic-controlled Britain was conquered by the Roman Empire from AD 43. <P0-S3> Viking invasions began in the 9th century, followed by more permanent settlements and political change—particularly in England. <P0-S4> 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. <P0-S5> 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. <P0-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. <P0-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. <P0-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> <P1-S0> when easterly showers fall on the sunny west (traditional chinese: ) is a hong kong tvb period drama series broadcasting from october till december 2008. the story takes place in the early 1930s in the city of guangzhou (china) and revolves around the rich and prestigious poon family. <SEP> <P2-S0> Relevant dates include 117 CE, when the Empire was at its greatest territorial extent, and the accession of Diocletian in 284. <P2-S1> In 395, after winning two destructive civil wars, Theodosius I died, leaving a collapsing field army and the Empire, still plagued by Goths, divided between his two incapable sons. <P2-S2> By 476 when Odoacer deposed the Emperor Romulus, the Western Roman Emperor wielded negligible military, political, or financial power and had no effective control over the scattered Western domains that could still be described as Roman. <P2-S3> Invading barbarians had established their own power in most of the area of the Western Empire. <P2-S4> While its legitimacy lasted for centuries longer and its cultural influence remains today, the Western Empire never had the strength to rise again. <P2-S5> Irreversible major territorial loss, however, began in 376 with a large - scale irruption of Goths and others. <SEP> <P3-S0> a few special additions enhance the language-learning experience. <P3-S1> for example, byu's international cinema, featuring films in several languages, is the largest and longest-running university-run foreign film program in the country. <P3-S2> as already noted, byu also offers an intensive foreign language living experience, the foreign language student residence. <P3-S3> this is an on-campus apartment complex where students commit to speak only their chosen foreign language while in their apartments. <P3-S4> each apartment has at least one native speaker to ensure correct language usage. <SEP> <P4-S0> Bewick then describes an experiment which succeeded in keeping swallows alive in Britain for several years, where they remained warm and dry through the winters. <P4-S1> He concludes: