Complex sentence: The North Union Railway was an early British railway company, formed in 1834 and whose line was fully opened in 1838, running from the Liverpool and Manchester Railway at Parkside, near Warrington, northwards to Preston, via Wigan.
Split into simpler sentences: The North Union Railway was an early British railway company, formed in 1834. The line was fully opened in 1838, and ran from the Liverpool and Manchester Railway at Parkside, near Warrington, northwards to Preston, via Wigan.