Answer:
Major threats to pioneer life and limb came from accidents, exhaustion, and disease. Crossing rivers were probably the most dangerous thing pioneers did. Swollen rivers could tip over and drown both people and oxen.
Step-by-step explanation:
oxen dying of thirst, overloaded wagons, and dysentery, among others. Trails were poorly marked and hard to follow, and travelers often lost their way. Guidebooks attempted to advise travelers, but they were often unreliable.