During the Paleolithic Era, we hunted and gathered our own food and moved from one place to another.
This is the Neolithic, We learned how to Farm and now we have a surplus of food and Domesticated animals.
In the Paleolithic Era (The Old Stone Age) we used tools to hunt and gather our own food we didn't have a lot of food so people lived an Nomadic life style there where only about 20-60 people.
In the Neolithic Era (The new Stone Age) was around in 9000 BCE people learned how to Farm and grow their own crops. People learned how to Domesticate animals which are the ones we have today. They had a surplus amount of food because of agriculture now people settle in one spot.
This is the Civilization a lot of things developed in this time writing had been invented and the wheel and new jobs have been made.