What helped primitive people to survive in the new harsh conditions?

Mastering fire, caves, building new dwellings, inventing new tools: a harpoon, a bow, arrows, a spear with a bone tip; closer unification of people into clan communities.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.