Complex sentence: The actual cause of death varies from slipping on ice and falling into the river, to an alleged eyewitness account of Pierre Lesperance, stating that LaRamée's camp was attacked by Arapahos, while other accounts suggest he was killed by rival trappers or traders.
Split into simpler sentences: The actual cause of death cited varies from slipping on ice and falling into the river to an alleged eyewitness account of Pierre Lesperance, stating that LaRamée's camp was attacked by Arapahos. Other accounts suggest he was killed by rival trappers or traders.