Complex sentence: Blackburn's textile sector fell into terminal decline from the mid- 20th century and subsequently faced similar challenges to other post-industrial northern towns, including deindustrialisation, economic deprivation and housing issues.
Split into simpler sentences: Blackburn's textile sector fell into a terminal decline from the mid- 20th century. Blackburn has subsequently faced similar challenges to other post-industrial northern towns, including deindustrialisation, economic deprivation and housing issues.