Lancashire is a non-metropolitan ceremonial county in north west England. The county town is Lancaster although the countys administrative centre is Preston. The county has a population of 1,449,300 and an area of. People from Lancashire are known as Lancastrians. The history of Lancashire begins with its founding in the 12th century. In the Domesday Book of 1086, some of its lands were treated as part of Yorkshire. The land that lay between the Ribble and Mersey, Inter Ripam et Mersam, was included in the returns for Cheshire. When its boundaries were established, it bordered Cumberland, Westmorland, Yorkshire, and Cheshire. Lancashire emerged as a major commercial and industrial region during the Industrial Revolution. Liverpool and Manchester grew into its largest cities, dominating global trade and the birth of modern industrial capitalism. The county contained several mill towns and the collieries of the Lancashire Coalfield. By the 1830s, approximately 85% of all cotton manufactured worldwide was processed in Lancashire. Accrington, Blackburn, Bolton, Burnley, Bury, Chorley, Colne, Darwen, Manchester, Nelson, Oldham, Preston, Rochdale and Wigan were major cotton mill towns during this time. Blackpool was a centre for tourism for the inhabitants of Lancashires mill towns, particularly during wakes week. The county was subject to significant boundary reform in 1974 including the appointment of lords lieutenant in Greater Manchester and Merseyside.