Answer: The transition from the Old Stone Age (Paleolithic) to the Late Stone Age (Neolithic).
Step-by-step explanation:
Man has been continuously advancing and evolving since its inception. It is precisely this progress that is involved in human nature that is key to progress. In the Paleolithic, man lived a nomadic life, hunted, searched for food, and was always on the move. The moment he domesticated the first plants and animals, he changed his lifestyle. That was precisely one of the critical moments that led to permanent settlements and larger social communities.