How did the Incas create this city in the clouds

For witch of these skills were early bantu noted? check all that apply farming fishing hunting ironworking seafaring

Historians are concerned with the accuracy of their writings and readings but are also aware of the inability of authors to know every angle of every story biases, perspectives, beliefs, and a variety of other differences history being told by one person at a time no one being totally accurate, as hard as we try really need on this, and you^^

What is zinn's approach to the study of history? what does he suggest occurs when history is told is the story of human progress?