Complex sentence: The West Sussex Railway opened in 1897 as the Hundred of Manhood and Selsey Tramway, so named to save having to build the railway to regulations that normally covered railways, later changing its name to the West Sussex Railway (Tramway Section).
Split into simpler sentences: The West Sussex Railway opened in 1897 as the Hundred of Manhood and Selsey Tramway. It later changed its name to the West Sussex Railway (Tramway Section).