Palaeolithic[ edit ] Palaeolithic Old Stone Age Britain is the period of the earliest known occupation of Britain by humans. This huge period saw many changes in the environment, encompassing several glacial and interglacial episodes greatly affecting human settlement in the region. Providing dating for this distant period is difficult and contentious. The inhabitants of the region at this time were bands of hunter-gatherers who roamed Northern Europe following herds of animals, or who supported themselves by fishing.
Varieties of maize At Mesa Verde , the people lived below and farmed on top of the mesa contending with both short growing seasons and frequent drought. Although it is possible that Indians grew several native plants such as gourds and chenopods at very early dates, the first evidence of maize cultivation in the Southwest dates from about BCE. Small, primitive maize cobs have been found at five different sites in New Mexico and Arizona. That suggests that the primitive maize they grew was already adapted to being grown in both hot and dry and short-season climates.