during the old stone age,people used stone tools.people hunted and gathered for there food.because of an unreliable supply of food,they lived in a nomadic life style. groups typically were no larger than 20-60 people.
the new stone age began around 9000 BCE when people learned to grow crops.people learned to domesticate most of the animals we use today.people were able to live in one place. acculturate created a stably supply of food.allowing for a increase in population.farming villages begane to arising some of them eventaly turened into citeies.
some areas of the world experienced a dramatic in their way of life:the development of civilization.these places saw the development of writing,government,job specialization,and increased technological improvements.