sentences:  The idea of city regions has been proposed subsequently, although the 2006 local government white paper had no firm proposals for formal recognition of this concept.This changed in 2010 when the Government accepted a proposal from the Association of Greater Manchester Authorities to establish a Greater Manchester Combined Authority as an indirectly elected, top tier, strategic authority for Greater Manchester.In 2014 similar indirectly elected combined authorities were established for the metropolitan counties of South Yorkshire and West Yorkshire, and two combined authorities were established which each covered a metropolitan county and adjacent non-metropolitan districts