Complex sentence: The creation of the Midland and Great Northern Joint Railway, a combined venture between the Midland railway and the Great Northern railway merged several smaller schemes into a larger proposal of creating a new main line from the Midlands into Norfolk.
Split into simpler sentences: The creation of the Midland and Great Northern Joint Railway, a combined venture between the Midland railway and the Great Northern railway. It merged several smaller schemes into a larger proposal of creating a new main line from the Midlands into Norfolk.