Read the sentences.Canal systems connected Eastern factories with Western markets.Two of these were the Eerie system and the Pennsylvania chain.The railroads followed similar routes.Which of the following best combines the sentences into one clear and engaging sentence?

The first two sentences identify the Eerie system and Pennsylvania chain as examples of canal systems. The third sentence adds that railroads followed similar routes, so the combined sentence should keep the canal examples attached to canals and include railroads separately. Choice D does this clearly: canal systems, including those examples, and railroads connected Eastern factories with Western markets.

AI-written and checked against the verified answer.