Question: Was the Edison Sault Power Canal built after the Allegheny Portage Railroad discontinued operating?
Sentence (from "Allegheny Portage Railroad"): The Allegheny Portage Railroad was the first railroad constructed through the Allegheny Mountains in central Pennsylvania, United States; it operated from 1834 to 1854 as the first transportation infrastructure through the gaps of the Allegheny that connected the midwest to the eastern seaboard across the barrier range of the Allegheny Front.
Relevant evidence: Yes