This meant that the United Kingdom created in 1707 by the Treaty of Union between England and Scotland encompassed all of Great Britain.
The Kingdom of Ireland merged with this state in 1801 to form the United Kingdom of Great Britain and Ireland.
The adjective "British" is commonly used to refer to matters relating to the United Kingdom.
The term has no definite legal connotation, but is used in law to refer to United Kingdom citizenship and matters to do with nationality.
GB and GBR are the standard country codes for the United Kingdom (see ISO 3166-2 and ISO 3166-1 alpha-3) and are consequently used by international organisations to refer to the United Kingdom.
Additionally, the United Kingdom's Olympic team competes under the name "Great Britain" or "Team GB".The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or, informally, Britain, is a sovereign country in western Europe.Lying off the north-western coast of the European mainland, the UK includes the island of Great Britain, the north-eastern part of the island of Ireland and many smaller islands.The UK is also a member of the Commonwealth of Nations, the Council of Europe, the G7, the G20, NATO, the Organisation for Economic Co-operation and Development (OECD), Interpol and the World Trade Organization (WTO).The 1707 Acts of Union declared that the kingdoms of England and Scotland were "United into One Kingdom by the Name of Great Britain", though the new state is also described in the Acts as the "Kingdom of Great Britain", "United Kingdom of Great Britain" and "One Kingdom".Apart from this land border, the UK is surrounded by the Atlantic Ocean, with the North Sea to its east, the English Channel to its south and the Celtic Sea to its south-south-west, giving it the 12th-longest coastline in the world.The Irish Sea lies between Great Britain and Ireland.Five-sixths of Ireland seceded from the UK in 1922, leaving the present formulation of the United Kingdom of Great Britain and Northern Ireland.the remnants of the British Empire which, at its height in the 1920s, encompassed almost a quarter of the world's land mass and was the largest empire in history.The nearby Isle of Man, Bailiwick of Guernsey and Bailiwick of Jersey are not part of the UK, being Crown dependencies with the British Government responsible for defence and international representation.Prior to the creation of the UK, Wales had been conquered and annexed by the Kingdom of England.