Mesoamerica, now Mexico. Domestication begins, also understood as the selection of the most suitable species and therefore the involuntary genetic modification of the species, of plants like corn and beans, and animals like turkey. All this allowed human groups to form villages, have surpluses to support non-productive jobs, larger populations, sustain complex organizations, have writing, technology, armies, and religion. So it makes a difference. But America arrived 5,000 years after Mesopotamia in this regard, and furthermore, the yields of agricultural crops are not the same, and on a continent with enormous geographical barriers to the diffusion of knowledge, even the turkey cannot compare with sheep, horses, donkeys, cows, and pigs (present in Eurasia) in terms of yield. This will make a difference when the two cultures come into contact.
