In Ankole, hima people who live on animal husbandry and IRU people who live on agricultural sanitation live together; In Arizona, the Navajo people used to live by hunting and gathering. Now they are mainly animal husbandry. They are adjacent to the Hopi people who operate agriculture; The southeast coast of Australia used to be inhabited by Aboriginal people who hunted and plundered food, but now there are Europeans engaged in agriculture, animal husbandry and industry.
The statement 'Geographical environment is not the decisive factor of human production mode' illustrates that the author lists these facts.