The answer is: <span>None of the monkeys have prehensile tails.
Prehensile tails are the type of tyles which structure are adapted in a way that allow the animal to grab on hard objects and hang on to it. </span><span> colobus, macaques, and baboons physical structures are very similar to human. So rather than seeking protection/shelter on top of trees, they occasionally use caves just like early humans.</span>
The hardships for Moving west were that you could run out of food or supplies. But there motivations were high becuase they needed more land becuase the population was growing and there wasn't enough room for everybody in their towns.