Complex sentence: This Sicilian community first was centered in Our Lady of Pompeii parish on Siegel St. in Williamsburgh, however as industry expanded along Flushing Ave. the Sicilian population expanded with the growing need for labor by factory operators.
Split into simpler sentences: This Sicilian community first was centered in Our Lady of Pompeii parish on Siegel St. in Williamsburgh, however as industry expanded along Flushing Avenue. The Sicilian population expanded with the growing need for labor by factory operators.