The indigenous inhabitants of North America, before the arrival
of Europeans and subsequently of Africans, left behind an
archaeological record that indicates that, north of the central
Mexican valley, populations were relatively small, isolated, and
broadly reliant on the hunter-gatherer mode of production with
supplementary horticulture. What prevented the pre-contact
economies of North America's peoples from developing as in
Eurasia?
A
Until the importation of horses, cattle, swine, sheep, and
goats, North America lacked domesticated animals, because there
simply were...