This use of polished stone axes increased significantly in the Neolithic, however were originally used within the previous Mesolithic in some areas corresponding to Ireland. Agriculture fed larger populations, and the transition to sedentism allowed concurrently raising more kids, as infants now not needed to be carried, as nomadic ones should. Additionally, children could contribute labor to the elevating of crops extra readily than they could to the hunter-gatherer economic system. Other technological advances made in the course of the Paleolithic period have been clothes and shelter; the adoption of both applied sciences cannot be dated precisely, however they had been a key to humanity’s progress.

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A well-known example of a reactive machine …