The steep mountain, dangerous obstacles, like animals, crumble, a land slide might even happen, and not having enough water to travel far and get where they need to go.
The greatest challenge to pioneers crossing the western mountains were the dangerous passes.
Explanation:
As, the travelers were accompanied by there families and the expensive trade materials which were sometimes greatly damaged by the difficult passage way in the western region of the United States. So, for that reason the people in the western region had great concerns for developing there own pathways and safe routes for avoiding any damage or injury.
While, the tribal system had earlier imposed there laws and a very well mannered system existed so there were very few complications due to the people who resided inside the west.
