Complex sentence: In 1937, the district was combined with the Waterloo with Seaforth urban district to form the municipal borough of Crosby which was in turn was absorbed into the new Metropolitan Borough of Sefton on 1 April 1974.
Split into simpler sentences: In 1937, the district was combined with the Waterloo with Seaforth urban district to form the municipal borough of Crosby. This in turn was absorbed into the new Metropolitan Borough of Sefton on 1 April 1974.