Which canal was in operation most recently, the Chesapeake and Ohio Canal or the Blackstone Canal?
Chesapeake and Ohio Canal: The Chesapeake and Ohio Canal, abbreviated as the C&O Canal and occasionally called the "Grand Old Ditch," operated from 1831 until 1924 along the Potomac River from Washington, D.C., to Cumberland, Maryland. Blackstone Canal: The Blackstone Canal was a waterway linking Worcester, Massachusetts, to Providence, Rhode Island (and Narragansett Bay) through the Blackstone Valley via a series of locks and canals during the early 19th century.
Chesapeake and Ohio Canal