Which did construction start on first, the Delaware and Raritan Canal or the Pennsylvania Canal?
Pennsylvania Canal: Pennsylvania Canal "(or sometimes Pennsylvania Canal system)" refers generally to a complex system of transportation infrastructure improvements including canals, dams, locks, tow paths, aqueducts, and viaducts. Pennsylvania Canal:  The Canal and Works were constructed and assembled over several decades beginning in 1824, the year of the first enabling act and budget items. Delaware and Raritan Canal: The Delaware and Raritan Canal (D&R Canal) is a canal in central New Jersey, United States, built in the 1830s, that served to connect the Delaware River to the Raritan River.
Pennsylvania Canal