What is the UK’s longest river?
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The UK’s longest river is the River Severn, stretching over 220 miles (354 kilometers). It flows through Wales and England, starting in the Cambrian Mountains of Wales and emptying into the Bristol Channel. The Severn passes through several cities, including Shrewsbury and Gloucester, and is known for its tidal bore, which occurs near its mouth when the incoming tide causes a wave to travel upstream. The river has played an important role in transportation and trade throughout British history.