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
Orange County, California Orange County, California Orange County is a county in the Los Angeles metropolitan area in the U.S. state of California. As of the 2010 census, the population was 3,010,232, making it the third-most populous county in California, the sixth-most populous in the United States, and more populous than 21 U.S. states. Its county seat is Santa Ana. It is the second most densely populated county in the state, behind San Francisco County. The county's four largest cities by population, Anaheim, Santa Ana (county seat), Irvine, and Huntington Beach, each have a population exceeding 200,000. Several of Orange County's cities are