Complex sentence: The "Tonquin" left the sound on 21 October for Tasmania, where local Palawa peoples sold the crew stockpiles of "hogs, bread-fruit, (and) yams" among other products.
Split into simpler sentences: The "Tonquin" left the sound on 21 October for Tasmania. While at Tasmania, local Palawa peoples sold the crew stockpiles of "hogs, bread-fruit, (and) yams" among other products.