In Guns, Germs and Steel, comment on the importance of the domestication of wild animals.

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The chapter you want to look a is chapter four,
which explains how vital the domestication of animals was to certain societies. The
domestication provided such groups of people with meat, milk, fertiliser, transport,
leather, a military advantage, wool and the means of ploughing fields. In addition the
domestication of animals exposed societies to a variety of germs that ended up being
crucial in the conquest of other peoples, as the decimation of the New World by smallpox
amply demonstrates.

In the concluding paragraph of this
chapter, the author points out why the domestication of animals was such a crucial
ingredient in explaining why some societies were able to ultimately dominate
others:

The
resulting food surpluses, and (in some areas) the animal-based means of transporting
those surpluses, were a prerequisite for the development of settled, politically
centralised, socially stratified, economiclaly complex, technologically innovative
societies.

The domestication
of animals is therefore one of the key factors that helps explain the question that the
book sets out to answer.