Complex sentence: Wilmslow Road, Oxford Road and Oxford Street are part of an 18th-century route from Manchester to Oxford, which can be traced on modern maps by locating roads which are called (or used to be called) the A34.
Split into simpler sentences: Wilmslow Road, Oxford Road and Oxford Street are part of an 18th-century route from Manchester to Oxford. It can be traced on modern maps by locating roads which are called (or used to be called) the A34.