The British people, or the Britons, are the citizens of the United Kingdom of Great Britain and Northern Ireland, the British Overseas Territories, and the Crown dependencies. British nationality law governs modern British citizenship and nationality, which can be acquired, for instance, by descent from British nationals. When used in a historical context, "British" or "Britons" can refer to the Celtic Britons, the indigenous inhabitants of Great Britain and Brittany, whose surviving members are the modern Welsh people, Cornish people and Bretons. Although early assertions of being British date from the Late Middle Ages, the creation of the united Kingdom of Great Britain in 1707 triggered a sense of British national identity.

The indigenous people of the British Isles have a combination of Celtic, Norse, Anglo-Saxon and Norman ancestry.  Between the 8th and 11th centuries, "three major cultural divisions" had emerged in Great Britain: the English, the Scots and the Welsh, the earlier Brittonic Celtic polities in what are today England and Scotland having finally been absorbed into Anglo-Saxon England and Gaelic Scotland by the early 11th century. The English had been unified under a single nation state in 937 by King Athelstan of Wessex after the Battle of Brunanburh. Before then, the English (known then in Old English as the Anglecynn) were under the governance of independent Anglo-Saxon petty kingdoms which gradually coalesced into a Heptarchy of seven powerful states, the most powerful of which were Mercia and Wessex. Scottish historian and archaeologist Neil Oliver said that the Battle of Brunanburh would "define the shape of Britain into the modern era", it was a "showdown for two very different ethnic identities - a Norse Celtic alliance versus Anglo Saxon. It aimed to settle once and for all whether Britain would be controlled by a single imperial power or remain several separate independent kingdoms, a split in perceptions which is still very much with us today". However, historian Simon Schama suggested that it was Edward I of England who was solely "responsible for provoking the peoples of Britain into an awareness of their nationhood" in the 13th century. Scottish national identity, "a complex amalgam" of Gaelic, Brittonic, Pictish, Norsemen and Anglo-Norman origins, was not finally forged until the Wars of Scottish Independence against the Kingdom of England in the late 13th and early 14th centuries.  Though Wales was conquered by England, and its legal system replaced by that of the Kingdom of England under the Laws in Wales Acts 1535-1542, the Welsh endured as a nation distinct from the English, and to some degree the Cornish people, although conquered into England by the 11th century, also retained a distinct Brittonic identity and language. Later, with both an English Reformation and a Scottish Reformation, Edward VI of England, under the counsel of Edward Seymour, 1st Duke of Somerset, advocated a union with the Kingdom of Scotland, joining England, Wales, and Scotland in a united Protestant Great Britain. The Duke of Somerset supported the unification of the English, Welsh and Scots under the "indifferent old name of Britons" on the basis that their monarchies "both derived from a Pre-Roman British monarchy".  Following the death of Elizabeth I of England in 1603, the throne of England was inherited by James VI, King of Scots, so that the Kingdom of England and the Kingdom of Scotland were united in a personal union under James VI of Scotland and I of England, an event referred to as the Union of the Crowns. King James advocated full political union between England and Scotland, and on 20 October 1604 proclaimed his assumption of the style "King of Great Britain", though this title was rejected by both the Parliament of England and the Parliament of Scotland, and so had no basis in either English law or Scots law.  Despite centuries of military and religious conflict, the Kingdoms of England and Scotland had been "drawing increasingly together" since the Protestant Reformation of the 16th century and the Union of the Crowns in 1603. A broadly shared language, island, monarch, religion and Bible (the Authorized King James Version) further contributed to a growing cultural alliance between the two sovereign realms and their peoples. The Glorious Revolution of 1688 resulted in a pair of Acts of the English and Scottish legislatures--the Bill of Rights 1689 and Claim of Right Act 1689 respectively--which ensured that the shared constitutional monarchy of England and Scotland was held only by Protestants. Despite this, although popular with the monarchy and much of the aristocracy, attempts to unite the two states by Acts of Parliament in 1606, 1667, and 1689 were unsuccessful; increased political management of Scottish affairs from England had led to "criticism", and strained Anglo-Scottish relations.  While English maritime explorations during the Age of Discovery gave new-found imperial power and wealth to the English and Welsh at the end of the 17th century, Scotland suffered from a long-standing weak economy. In response, the Scottish kingdom, in opposition to William II of Scotland (III of England), commenced the Darien Scheme, an attempt to establish a Scottish imperial outlet--the colony of New Caledonia--on the isthmus of Panama. However, through a combination of disease, Spanish hostility, Scottish mismanagement and opposition to the scheme by the East India Company and the English government (who did not want to provoke the Spanish into war) this imperial venture ended in "catastrophic failure" with an estimated "25% of Scotland's total liquid capital" lost.  The events of the Darien Scheme, and the passing by the English Parliament of the Act of Settlement 1701 asserting the right to choose the order of succession for English, Scottish and Irish thrones, escalated political hostilities between England and Scotland, and neutralised calls for a united British people. The Parliament of Scotland responded by passing the Act of Security 1704, allowing it to appoint a different monarch to succeed to the Scottish crown from that of England, if it so wished. The English political perspective was that the appointment of a Jacobite monarchy in Scotland opened up the possibility of a Franco-Scottish military conquest of England during the Second Hundred Years' War and War of the Spanish Succession. The Parliament of England passed the Alien Act 1705, which provided that Scottish nationals in England were to be treated as aliens and estates held by Scots would be treated as alien property, whilst also restricting the import of Scottish products into England and its colonies (about half of Scotland's trade). However, the Act contained a provision that it would be suspended if the Parliament of Scotland entered into negotiations regarding the creation of a unified Parliament of Great Britain, which in turn would refund Scottish financial losses on the Darien Scheme.  The earliest migrations of Britons date from the 5th and 6th centuries AD, when Brittonic Celts fleeing the Anglo-Saxon invasions migrated what is today northern France and north western Spain and forged the colonies of Brittany and Britonia. Brittany remained independent of France until the early 16th century and still retains a distinct Brittonic culture and language, whilst Britonia in modern Galicia was absorbed into Spanish states by the end of the 9th century AD.  Britons - people with British citizenship or of British descent - have a significant presence in a number of countries other than the United Kingdom, and in particular in those with historic connections to the British Empire. After the Age of Discovery the British were one of the earliest and largest communities to emigrate out of Europe, and the British Empire's expansion during the first half of the 19th century triggered an "extraordinary dispersion of the British people", resulting in particular concentrations "in Australasia and North America".  The British Empire was "built on waves of migration overseas by British people", who left the United Kingdom and "reached across the globe and permanently affected population structures in three continents". As a result of the British colonisation of the Americas, what became the United States was "easily the greatest single destination of emigrant British", but in Australia the British experienced a birth rate higher than "anything seen before" resulting in the displacement of indigenous Australians.  In colonies such as Southern Rhodesia, British East Africa and Cape Colony, permanently resident British communities were established and whilst never more than a numerical minority these Britons "exercised a dominant influence" upon the culture and politics of those lands. In Australia, Canada and New Zealand "people of British origin came to constitute the majority of the population" contributing to these states becoming integral to the Anglosphere.  The United Kingdom Census 1861 estimated the size of the overseas British to be around 2.5 million, but concluded that most of these were "not conventional settlers" but rather "travellers, merchants, professionals, and military personnel". By 1890, there were over 1.5 million further UK-born people living in Australia, Canada, New Zealand and South Africa. A 2006 publication from the Institute for Public Policy Research estimated 5.6 million Britons lived outside of the United Kingdom.

Using a quote from the above article, answer the following question: what else can you tell me about their distribution?
The English had been unified under a single nation state in 937 by King Athelstan of Wessex after the Battle of Brunanburh.