Which of these two canals was built first: Junction Canal or Duluth Ship Canal?  
Junction Canal: The Junction Canal was a canal in the states of New York and Pennsylvania in the United States. Junction Canal:  The canal was partly open in 1854, but the entire length was not finished until 1858. Duluth Ship Canal: The Duluth Ship Canal is an artificial channel cut through Minnesota Point, providing direct access to Duluth harbor from Lake Superior.
i don't know