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
New England town more densely populated, than they are in the three northern New England states. In early colonial times, all incorporated municipalities in New England were towns; there were no cities. Springfield, Massachusetts, for instance, was settled as a "plantation" (in colonial Massachusetts, the term was synonymous with town) as early as 1636, but the city of Springfield was not established until 1852. The oldest cities in New England date to the last few decades of the 18th century, (e.g. New Haven, Connecticut was chartered as a city in 1784). In New England, cities were not widespread until well into the 19th