Question: Which was opened first, Louisville and Portland Canal or Schuylkill Canal?
Context: The Manayunk Bridge (a.k.a. Manayunk Viaduct) is a historic bridge in Pennsylvania across the Schuylkill River and adjacent Schuylkill Canal between Bala Cynwyd in Montgomery County and the Manayunk neighborhood of Philadelphia.  It is now used as an extension of the Cynwyd Heritage Trail to connect to the Schuylkill River Trail after a rail-to-trail conversion. The Manayunk Canal Towpath is a trail that runs along the Schuylkill River Canal in Manayunk, Pennsylvania, a northwest section of Philadelphia.  The Towpath parallels the Manayunk Canal and the Schuylkill River.  The Towpath is accessible from Fairmount Park to the East and from the Schuylkill River Trail to the West.  As the Towpath runs through heavy industry and rural-like settings, its surface varies between boardwalk, gravel, and pavement.  This makes the Towpath ideal for running, walking, and cycling.  Fishing in the Schuylkill Canal along the Manayunk Towpath is a favorite past time for visitors and residents alike. The Louisville and Portland Canal was a 2 mi canal bypassing the Falls of the Ohio River at Louisville, Kentucky.  The Falls form the only barrier to navigation between the origin of the Ohio at Pittsburgh and the port of New Orleans on the Gulf of Mexico; circumventing them was long a goal for Pennsylvanian and Cincinnatian merchants.  The canal opened in 1830 as the private Louisville and Portland Canal Company but was gradually bought out during the 19th century by the federal government, which had invested heavily in its construction, maintenance, and improvement.  The Louisville and Portland Canal became the McAlpine Locks and Dam in 1962 after extensive modernization. Portland Inlet is an inlet of the Pacific Ocean on the coast of British Columbia, Canada, approximately 55 kilometers north of Prince Rupert, British Columbia.  It joins the Chatham Sound opposite the Dixon Entrance.  It is 40 kilometers long and as much as 13 kilometers wide.  It drains the Portland Canal, Nass River, and Khutzeymateen Inlet, among others, and is the site of Pearse Island and Somerville Island.  Other than Nass Bay and the Portland Canal, other major sidewaters of the inlet are Observatory Inlet and its east arm, Alice Arm. The Schuylkill Canal Association (SCA) is a non-governmental organization that maintains the Oakes Reach and Lock #60 of the Schuylkill Canal as a public recreation area and historical site.  Organized in 1982 as the Schuylkill Canal Advisory Board, the Association, in cooperation with Upper Providence Township, Montgomery County, and the Commonwealth of Pennsylvania, maintains the canal reach, associated structures, parks and trails.  The area extends along the canal and left bank of the Schuylkill River, from Mont Clare past Port Providence.  The area makes up a large part of the Schuylkill Navigation Canal, Oakes Reach Section Historic District (#88000462). Port Providence is an unincorporated village along the Schuylkill River in Upper Providence Township, Montgomery County, Pennsylvania, United States.  Originally known as Jacobs, then Lumberville, the village is located on one of the two remaining watered stretches of the Schuylkill Canal.  The village was notable as having one of the few inns on the canal between Norristown and Pottstown.  Fitzwater Station, a historic tavern, is located in Port Providence, on the canal. The Mont Clare Bridge (also Phoenixville – Mont Clare Bridge) is a crossing of the Schuylkill River between Mont Clare and Phoenixville in Pennsylvania, USA.  The bridge was also referred to as the Intercounty Bridge, as it connects Montgomery and Chester counties.  The bridge abuts a shorter county bridge across the Schuylkill Canal and towpath on the Mont Clare side to complete the crossing.  The bridges carry Bridge Street (PA 29), a bike lane and a sidewalk.  The bridge will also become part of the Schuylkill River Trail routing. East Falls is a neighborhood in the Northwest section of Philadelphia, Pennsylvania, United States on the east or left bank side of the now submerged Schuylkill River cataracts, the 'Falls of the Schuylkill' that became submerged as the Schuylkill Canal and Fairmount Water Works projects were completed in 1822.  The East Falls community is located adjacent to Germantown, Roxborough, Allegheny West, and Nicetown-Tioga neighborhoods.  East Falls is also adjacent to Wissahickon Valley Park.  The neighborhood runs along a stretch of Ridge Avenue that is only a few miles long, along the banks of the Schuylkill River then extends northeast to Wissahickon Avenue.  East Falls overlooks the multi-use recreational path of Fairmount Park along Kelly Drive, and is desirable for its central location, an easy commute to Center City, with easy access to several major roadways and public transportation.  East Falls continues to develop, with new housing, retail space and recreation centers in production.  It features three streets in proximity with the word "Queen" in them (Queen Lane, New Queen Street, and Indian Queen Lane), two train stations, a number of bars and restaurants, a small Korean grocer, illustrious mansions as well as some recently renovated housing that continues to increase in value. Schuylkill Canal is the common, but technically inaccurate, name for the Schuylkill Navigation, a 19th-century commercial waterway in and along the Schuylkill River in the U.S. state of Pennsylvania.  The "canal" was actually a system of interconnected canals and slack-water pools in the river, which is called a navigation.  Chartered in 1815, the Schuylkill Navigation opened in 1825 to provide transportation and water power.  At the time, the river was the least expensive and most efficient method of transporting bulk cargo, and the eastern seaboard cities of the U.S. were experiencing an energy crisis due to over forestation.  It fostered the mining of anthracite coal as the major source of industry between Pottsville and eastern markets.  Along the tow-paths, mules pulled barges of coal from Port Carbon through the water gaps to Pottsville; locally to the port and markets of Philadelphia; and some then by ship or through additional New Jersey waterways, to New York City markets. Observatory Inlet is an inlet on the North Coast of British Columbia.  It is a northward extension of Portland Inlet, other sidewaters of which include the Portland Canal.  The entrance of Observatory Inlet, from Portland Inlet, lies between Ramsden Point and Nass Point.  Ramsden Point also marks, to the west, the entrance of Portland Canal.  Observatory Inlet was named by George Vancouver in 1793, because he set up his observatory on the shore of the inlet, at Salmon Cove, in order to calibrate his chronometers.  His two vessels, HMS "Discovery" and HMS "Chatham", stayed in Salmon Cove from July 23 to August 17, 1793.  During this time a boat surveying expedition under Vancouver himself explored Behm Canal.  Vancouver also named three headlands at the entrance of Observatory Inlet: Maskelyne Point, for Nevil Maskelyne, the Astronomer Royal, Wales Point, for William Wales, the mathematical master who sailed with James Cook, and Ramsden Point, after the famed mathematical instrument-maker Jesse Ramsden.
Answer: Schuylkill Canal