{"gt_parse": {"text_sequence": "cr ys tal line subst ance coul d be c arried in any sing le jou rney, made moving salt via overland rout es very expensi ve.In 1398, though, the Steck nitz Canal, one of the first ma nmade waterways in Europe, was completed , making it possible to transport much more salt in a s ingle shipment and t o do so with muc h greater ease and safety. That change hel"}}