What difficulties primitive people experienced. How did people overcome these difficulties?

Primitive people experienced the greatest difficulties when communicating with other people.
To do this, they used various gestures and sounds, later this method of communication was improved and primitive languages of communication began to emerge.

The greatest danger for primitive people was the attacks of wild animals.
After primitive people learned how to make fire, they began to use it to protect their homes, scare away animals, as well as for cooking and other household needs.