Northumberland role in the Industrial Revolution from the 18th century on. Many coal mines operated in Northumberland until the widespread closures in the 1970s and 1980s. Collieries operated at Ashington, Bedlington, Blyth, Choppington, Netherton, Ellington and Pegswood. The region's coalfields fuelled industrial expansion in other areas of Britain, and the need to transport the coal from the collieries to the Tyne led to the development of the first railways. Shipbuilding and armaments manufacture were other important industries before the deindustrialisation of the 1980s. Northumberland remains largely rural, and is the least-densely populated county in England. In recent years the county has
County Louth fairly average total population and its small size, Louth is the second-most densely populated county in Ireland, behind Dublin, and the fourth-most on the island of Ireland. County Louth is named after the village of Louth, which in turn is named after Lugh, a god of the ancient Irish. Historically, the placename has had various spellings; "Lugmad", "Lughmhaigh", and "Lughmhadh" (see Historic Names List, for full listing). "Lú" is the modern simplified spelling. The county is steeped in myth, legend and history, and is a setting in the Táin Bó Cúailnge. Later it saw the influence of the Vikings, as