Complex sentence: In the mid- 1950s the Katy was taken over by a conglomerate whose focus was freight train profits; they showed little interest in properly maintaining the track and equipment to operate a comfortable passenger streamliner.
Split into simpler sentences: In the mid- 1950s the Katy was taken over by a conglomerate whose focus was freight train profits. They showed little interest in properly maintaining the track and equipment for running a comfortable passenger streamliner.