Complex sentence: Cleveland County (1974--1996) was abolished in 1996 under the Banham review, it was replaced with the single tier unitary authorities of Middlesbrough, Stockton-on-Tees, Redcar and Cleveland and Hartlepool.
Split into simpler sentences: Cleveland County (1974--1996) was abolished in 1996 under the Banham review. It was replaced with the single-tier unitary authorities of Middlesbrough, Stockton-on-Tees, Redcar and Cleveland and Hartlepool.