Cornwall county has been administered since 2009 by the unitary authority, Cornwall Council. The ceremonial county of Cornwall also includes the Isles of Scilly, which are administered separately. The administrative centre of Cornwall, and its only city, is Truro. Cornwall is the homeland of the Cornish people and the cultural and ethnic origin of the Cornish diaspora. It retains a distinct cultural identity that reflects its unique history, and is recognised as one of the Celtic nations with a rich cultural heritage. It was formerly a Brythonic kingdom and subsequently a royal duchy. The Cornish nationalist movement contests the present constitutional
Cornwall industry in Cornwall. Redruth and Camborne form the largest urban area in Cornwall, and both towns were significant as centres of the global tin mining industry in the 19th century; nearby copper mines were also very productive during that period. Cornwall borders the county of Devon at the River Tamar. Major roads between Cornwall and the rest of Great Britain are the A38 which crosses the Tamar at Plymouth via the Tamar Bridge and the town of Saltash, the A39 road (Atlantic Highway) from Barnstaple, passing through North Cornwall to end in Falmouth, and the A30 which crosses the border