Who were the people that traveled in the desert and had no permanent place to live?
The People in the desert who had no permeant place to live in were called the nomads>
Because farming meant that people stayed in the same place year-round, growing, tending to, and harvesting their crops. Before farming, people were nomadic -- they traveled around in tribes, never staying in the same place very long. But once people began farming, fixed, permanent communities began to develop.
The Atacama Desert is the driest place on earth and I have already been there. I have traveled the entire length of the desert from south to north by bus. It was an interesting trip but not the highlight of our vacation in South America. I am happy to have seen the Atacama but would probably not return.