Complex sentence: The aqueduct was to be a key part of the central section of the proposed Ellesmere Canal, an industrial waterway that would create a commercial link between the River Severn at Shrewsbury and the Port of Liverpool on the River Mersey.
Split into simpler sentences: The aqueduct was to be a key part of the central section of the proposed Ellesmere Canal. An industrial waterway that would create a commercial link between the River Severn at Shrewsbury and the Port of Liverpool on the River Mersey.