Complex sentence: The district was created on 1 April 1974 under the Local Government Act 1972 by merging Northwich and Winsford urban districts, Northwich Rural District and part of Runcorn Rural District.
Split into simpler sentences: The district was created on 1 April 1974 under the Local Government Act 1972. It was a merger of Northwich and Winsford urban districts, Northwich Rural District and part of Runcorn Rural District.