Complex sentence: It started life as the Broadwaters Extension to the Wednesbury Canal which opened in 1785 to serve collieries in Moxley, authorised as a detached part of the Birmingham & Fazeley Canal under that canal's original Act.
Split into simpler sentences: It started life as the Broadwaters Extension to the Wednesbury Canal which opened in 1785 to serve collieries in Moxley. This section was authorised as a detached part of the Birmingham & Fazeley Canal under that canal's original Act.