<Li> The historical Kingdom of Great Britain is Britain for the period 1707--1801 . </Li> <Li> Britannia is the Roman province of Britain, or a poetic reference to later Britain, or a personification of Britain . </Li> <Ul> <Li> The United Kingdom of Great Britain and Northern Ireland, usually shortened to the United Kingdom (abbreviation UK), is the sovereign state comprising Great Britain plus Northern Ireland since 1927 . (The Partition of Ireland took place in 1922, but the consequent change in the official title of the UK was only made by Act of Parliament five years later .) The United Kingdom of Great Britain and Northern Ireland is often shortened to Britain, even on official websites . A proposal to rename the political entity as the "United Kingdom of Great Britain and Ulster" was formally recommended by civil servants to the Cabinet in 1949 but ultimately rejected . </Li> </Ul> <Li> The United Kingdom of Great Britain and Northern Ireland, usually shortened to the United Kingdom (abbreviation UK), is the sovereign state comprising Great Britain plus Northern Ireland since 1927 . (The Partition of Ireland took place in 1922, but the consequent change in the official title of the UK was only made by Act of Parliament five years later .) The United Kingdom of Great Britain and Northern Ireland is often shortened to Britain, even on official websites . A proposal to rename the political entity as the "United Kingdom of Great Britain and Ulster" was formally recommended by civil servants to the Cabinet in 1949 but ultimately rejected . </Li>

When did the term united kingdom come into common use