Is there a neutral relationship between 'Both unions established a foothold in the industry because they represented strategic workers in the apparel production  the skilled cutter working inside manufacturers' plants.' and 'Strategic workers were represented by the unions, which gave them a foothold in the industry.', lacking direct logical ties?
Both unions established a foothold in the industry because they represented strategic workers in the apparel production  the skilled cutter working inside manufacturers' plants.###Strategic workers were represented by the unions, which gave them a foothold in the industry.