The title of chapter three in the 12th edition is called "Population Geography." That, of course, is what this focuses on: the placement of population within the world. It quickly goes into infant mortality rate and gives a significant map of both North and South America, showing the higher mortality rate in South America. Then there is a section entitled "Migration."
Humankind is not tied to one local. ... We have proved remarkable able to adapt to new and different physical environments.
The migrations between Europe and Africa are adeptly displayed on a map and even the integration of the Aztec Empire is discussed. Refugees are also discussed in detail.
Refugees [are] people who leave their country because of persecution based on race, ethnicity, religion, nationality, or political opinion.
The graph of world population is startling, with the huge increase only in the last thousand years. Further, "Malthus's dismal equation" talks about how our resources are not keeping up with the demand of the population increase. As a result, some countries, like China, have gone to "population control" with propaganda such as "one couple, one child." Environmental ideas are also discussed.
Next, this chapter focuses on depopulation (such as the depopulation of Rome, once upon a time). Further, there is a grand comparison to the housing market collapse here in the United States where foreclosures forced many people (especially in Nevada) into the streets.
There is a significant statement in the conclusion which does well to summarize the chapter as a whole:
The cultural landscape visually expresses the varied ways in which societies accommodate their populations.