Complex sentence: After being attacked by the members of the Pawnee, the beaver pelts acquired from the Arapaho and his remaining trade goods stolen, and left for dead with an arrow in his spine, Pasquinel manages to return to Saint Louis.
Split into simpler sentences: After being attacked by the members of the Pawnee, his beaver pelts acquired from the Arapaho and his remaining trade goods are stolen. Left for dead with an arrow in his spine, Pasquinel manages to return to Saint Louis.