#Panama_Canal  a ship canal 40 miles long across the Isthmus of Panama built by the United State (1904-1914)
  supertype:  #ship_canal__shipway  a canal large enough for sea-going vessels
  part of:  #Panama__Republic_of_Panama  a republic on the Isthmus of Panama; achieved independence from Colombia in 1903
     part of:  #Isthmus_of_Panama  the isthmus that connects Central America and South America

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