Question: When was the kingdom that Heptarchy was part of abolished?

Context paragraphs:
paragraph_text: Capital punishment in New Zealand first appeared in a codified form when it became a British territory in 1840, and was first employed in 1842. It was last used in 1957, abolished for murder in 1961, and abolished altogether, including for treason, in 1989. During the period that it was in effect, 85 people were executed.
title: Capital punishment in New Zealand
paragraph_text: Brimpton is a mostly rural village and civil parish in West Berkshire, England. The village occupies a few square miles of land between the Kennet and Avon Canal, a long tributary the Enborne which is used as part of the Hampshire boundary and the winding slopes of an escarpment in the far south-east, beyond the Enborne which is almost contiguous with the larger settlement of Baughurst a wood-buffered part of Tadley post town. This high common field contains five round barrows from the period of the Heptarchy in Anglo Saxon England.
title: Brimpton
paragraph_text: In 1951 parts of the Limehurst Rural District were added to the County Borough of Oldham, and in 1954 further parts of the same district added to it on its abolition. Since 1961, Oldham has been twinned with Kranj in Slovenia. Under the Local Government Act 1972, the town's autonomous county borough status was abolished, and Oldham has, since 1 April 1974, formed part of the Metropolitan Borough of Oldham, within the Metropolitan county of Greater Manchester.
title: Oldham
paragraph_text: Mountain is a former provincial electoral division in Manitoba, Canada. It was created for the 1879 provincial election, and was abolished shortly before the 1958 election.
title: Mountain (electoral district)
paragraph_text: Franklin District was a New Zealand territorial authority that lay between the Auckland metropolitan area and the Waikato Plains. As a formal territory it was abolished on 31 October 2010 and divided between Auckland Council in the Auckland Region (39.82 percent by land area) to the north and Waikato and Hauraki districts in the Waikato Region (60.18 percent) to the south and east. The Auckland portion is now part of the Franklin ward, which also includes rural parts of the former Manukau City.
title: Franklin District
paragraph_text: Kavangoland, like other homelands in South West Africa, was abolished in May 1989 at the start of the transition to independence.
title: Kavangoland
paragraph_text: On 5 December 2007, the Government confirmed that Cornwall was one of five councils that would move to unitary status. This was enacted by statutory instrument as part of the 2009 structural changes to local government in England, The changes took effect on 1 April 2009. On that date the six districts and Cornwall County Council were abolished and were replaced by Cornwall Council.
title: Cornwall Council
paragraph_text: On , 1713, Smolensk Governorate was abolished and its territory was divided between Moscow and Riga Governorates. Smolensk Province was created as a result. The governorate was re-established in 1726, and Smolensk Province was re-incorporated into the Governorate. In 1775, it was included, along with parts of Moscow and Belgorod Governorates, into Smolensk Viceroyalty. The governorate was again restored in 1796.
title: Smolensk Governorate
paragraph_text: Pyrgiotissa was a province of Heraklion Prefecture, Crete, Greece. Its territory corresponded with that of the current municipal unit Tympaki. It was abolished in 2006.
title: Pyrgiotissa
paragraph_text: William Wilberforce's Slave Trade Act 1807 abolished the slave trade in the British Empire. It was not until the Slavery Abolition Act 1833 that the institution finally was abolished, but on a gradual basis. Since slave owners in the various colonies (not only the Caribbean) were losing their unpaid labourers, the government set aside £20 million for compensation but it did not offer the former slaves reparations.
title: Slavery in the British and French Caribbean
paragraph_text: Other states with long histories of no death penalty include Wisconsin (the only state with only one execution), Rhode Island (although later reintroduced, it was unused and abolished again), Maine, North Dakota, Minnesota, West Virginia, Iowa, and Vermont. The District of Columbia has also abolished the death penalty; it was last used in 1957. Oregon abolished the death penalty through an overwhelming majority in a 1964 public referendum but reinstated it in a 1984 joint death penalty/life imprisonment referendum by an even higher margin after a similar 1978 referendum succeeded but was not implemented due to judicial rulings.
title: Capital punishment in the United States
paragraph_text: Stauffenberg's full name was Claus Philipp Maria Justinian, followed by the noble title of "Count of Stauffenberg". He was born in the Stauffenberg castle of Jettingen between Ulm and Augsburg, in the eastern part of Swabia, at that time in the Kingdom of Bavaria, part of the German Empire. He was the third of four sons including the twins Berthold and Alexander and his own twin brother Konrad Maria, who died in Jettingen one day after birth on 16 November 1907. His father was Alfred Klemens Philipp Friedrich Justinian, the last Oberhofmarschall of the Kingdom of Württemberg. His mother was Caroline Schenk Gräfin von Stauffenberg, née Gräfin von Üxküll-Gyllenband, the daughter of Alfred Richard August Graf von Üxküll-Gyllenband and Valerie Gräfin von Hohenthal.The titles "Graf" and "Gräfin" mean count and countess, respectively. Schenk (i.e., cupbearer/butler) was an additional hereditary noble title. The ancestral castle of the nobility was the last part of the title, which was Schenk Graf von Stauffenberg and used as part of the name. The Stauffenberg family is one of the oldest and most distinguished aristocratic Catholic families of southern Germany. Among his maternal Protestant ancestors were several famous Prussians, including Field Marshal August von Gneisenau.On 11 November 1919, a new constitutional law, as part of the Weimar Republic, abolished the privileges of nobility. Article 109 also stated, "Legal privileges or disadvantages based on birth or social standing are to be abolished. Noble titles form part of the name only; noble titles may not be granted any more."
title: Claus von Stauffenberg
paragraph_text: Following the catastrophic events in Asia Minor, the monarchy was abolished via a referendum in 1924 and the Second Hellenic Republic was declared. Premier Georgios Kondylis took power in 1935 and effectively abolished the republic by bringing back the monarchy via a referendum in 1935. A coup d'état followed in 1936 and installed Ioannis Metaxas as the head of a dictatorial regime known as the 4th of August Regime. Although a dictatorship, Greece remained on good terms with Britain and was not allied with the Axis.
title: Greece
paragraph_text: Serres Province was one of the four provinces of Serres Prefecture of Greece. Its territory corresponded with that of the current municipalities Emmanouel Pappas and Serres, and part of the municipality Irakleia. It was abolished in 2006.
title: Serres Province
paragraph_text: The Slavery Abolition Act 1833 (3 & 4 Will. IV c. 73) was an 1833 Act of the Parliament of the United Kingdom abolishing slavery throughout the British Empire (with the exceptions ``of the Territories in the Possession of the East India Company '', Ceylon, now Sri Lanka, and Saint Helena; the exceptions were eliminated in 1843). The Act was repealed in 1998 as part of a wider rationalisation of English statute law, but later anti-slavery legislation remains in force.
title: Slavery Abolition Act 1833
paragraph_text: Although the Act of Parliament defining high treason remains on the United Kingdom's statute books, during a long period of 19th - century legal reform the sentence of hanging, drawing, and quartering was changed to drawing, hanging until dead, and posthumous beheading and quartering, before being abolished in England in 1870. The death penalty for treason was abolished in 1998.
title: Hanged, drawn and quartered
paragraph_text: Damaraland, like other homelands in South West Africa, was abolished in May 1989 at the start of the transition to independence.
title: Damaraland
paragraph_text: The Mercian Supremacy was the period of Anglo-Saxon history between 600 and 900, when the kingdom of Mercia dominated the Anglo-Saxon Heptarchy. Sir Frank Stenton apparently coined the phrase, arguing that Offa of Mercia who ruled 757–796 achieved the unification of England south of the Humber estuary. Scholastic opinion on the relationship between the kingdoms of Wessex and Mercia at this time remains divided.
title: Mercian Supremacy
paragraph_text: The urban district was abolished in 1974, with the Patterdale ward becoming a civil parish in the Eden district, and the rest becoming a civil parish in South Lakeland.
title: Lakes, Cumbria
paragraph_text: When Æthelflæd died in 918, Ælfwynn, her daughter by Æthelred, succeeded as 'Second Lady of the Mercians', but within six months Edward had deprived her of all authority in Mercia and taken her into Wessex.
title: Mercia

Reasoning steps:
Heptarchy >> has part >>>> Mercia
When was Mercia abolished? >>>> 918

Answer: spans: 918