sentences:  In existence for exactly four years, it was established on 1 July 2007 through the amalgamation of the former City of Geraldton and Shire of Greenough, and itself amalgamated with the Shire of Mullewa into the City of Greater Geraldton on 1 July 2011.A recommendation was made to the Minister for Local Government by the Local Government Advisory Board in August 2006 to amalgamate the Shire of Greenough with the City of Geraldton.The Greenough electors successfully petitioned for a referendum to determine whether amalgamation should proceed.