Complex sentence: Due largely to the sparsely populated rural areas through which the SMJR's lines traveled, and the equally sparse traffic, the company had a hand to mouth existence, usually struggling to break even let alone make a profit.
Split into simpler sentences: Due largely to the sparsely populated rural areas through which the SMJR's lines traveled, and the equally sparse traffic. The company had a hand to mouth existence, usually struggling to break even let alone make a profit.