Complex sentence: Once a complete and distinct community from the rest of Paisley, Charleston has become enveloped as Paisley expanded, in particular by post-WWII housing developments in Lochfield and Glenburn.
Split into simpler sentences: Once a complete and distinct community form the rest of Paisley, Charleston has become enveloped as Paisley expanded. In particular by post WWII housing developments in Lochfield and Glenburn.