Completar frases United KingdomVersión en línea United Kingdom por Irina Lalac 1 Britain Britain UK Republic Great Great Europe Europe Sea European The United Kingdom of and Northern Ireland , commonly known as the United Kingdom ( UK ) or Britain , is a sovereign state in . Lying off the north - western coast of the mainland , it includes the island of Britain ? a term also applied loosely to refer to the whole country ? the north - eastern part of the island of Ireland and many smaller islands . [ 8 ] Northern Ireland is the only part of the UK that shares a land border with another state ? the of Ireland . [ nb 6 ] Apart from this land border , the 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 - southwest . The Irish lies between Great and Ireland . The country has an area of 93 , 800 square miles ( 243 , 000 km2 ) , making it the 80th - largest sovereign state in the world and the 11th - largest in .
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