“British Isles” is geography that Ireland’s government rejects
The British Isles name an Atlantic archipelago of Great Britain, Ireland, Man, the Hebrides, Orkneys, Shetlands and others—yet Dublin refuses the label as politically loaded. Rocks as old as 2.7 billion years underpin Ireland, Wales, and northwest Scotland where Silurian collisions stitched once-separate landmasses.
The archipelago lies off north-western continental Europe and takes in Great Britain and Ireland plus Man, both chains of the Hebrides, the Orkney and Shetland groups and more than six thousand smaller islands, about 315,159 square kilometres in all with almost 75 million people. Two sovereign states share it: the Republic of Ireland, holding about five-sixths of the island of Ireland, and the United Kingdom. The Channel Islands off France are usually counted in, and Britain's Interpretation Act of 1978 treats them as part of the British Islands, even though geographically they sit outside the group.
Its landscape is modest by world standards. Ben Nevis tops out at 1,345 metres, and the largest lake, Lough Neagh, covers 390 square kilometres. The oldest rocks, about 2.7 billion years old, occur in Ireland, Wales and north-west Scotland, and in the Silurian the north-west collided with a south-east that had belonged to a separate continent. The North Atlantic drift keeps the marine climate about 11 °C warmer than the global average for the latitude and very damp, which once supported temperate rainforest, since almost entirely cleared by people.
Early in the first millennium BC Gaels, Picts and Britons, all speaking Insular Celtic tongues, occupied the islands. Rome conquered much of Britain from AD 43, Anglo-Saxons arrived as Roman power faded in the fifth century, Vikings raided and settled from the ninth, and the Norman conquest of England in 1066 and the Angevin incursion into Ireland from 1169 installed a new elite.
The collective name is ancient. Seafarers from the Greek colony of Massalia described the islands in the sixth century BC and Pytheas around 325 BC, known through later quotations. Polybius offers the earliest surviving text of the name, and the Greek and Latin forms probably echo a native Celtic word, with the Pretani becoming Britanni in Caesar's day; Ptolemy called Ireland little Britain. John Dee's 1577 work contains the first English citation. Because British reads as political, Ireland's government does not recognise the term and prefers alternatives, and joint documents such as the Good Friday Agreement say these islands.
Source: British Isles
