What Challenges Do You Think The Ancestral Puebloans Faced When Constructing Cliff Dwellings?

What Challenges Do You Think The Ancestral Puebloans Faced When Constructing Cliff Dwellings? What challenges do you think the ancestral Puebloans faced when constructing cliff dwellings? Consider location and natural resources. lack of water, sun exposure and heat, access to steep sites. Why do you think that many separate cultures developed in the Andes before