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
Hudson County, New Jersey cities in the United States was Jersey City, which was ranked 77th in the United States Census Bureau's rankings based on the 2016 population estimate. Of municipalities with over 50,000 people, Union City is the most densely populated in the United States, while several Hudson County municipalities are among the most densely populated in the United States as well as worldwide. North Hudson has the second-largest Cuban American population in the United States behind Miami.Jersey City is the 21st-most ethnically diverse city in the United States and the most ethnically diverse on the East Coast of the United States. Hudson