Complex sentence: From 1940 through 1953, GE participated in a design, production, and marketing consortium (Alco-GE) for diesel-electric locomotives with the American Locomotive Company; the U25B was developed following the termination of the consortium agreement.
Split into simpler sentences: From 1940 through 1953, GE participated in a design, production and marketing consortium (Alco-GE) for diesel-electric locomotives with the American Locomotive Company. The U25B was developed following the termination of the consortium agreement.