men used to hunt for food. And women used to get fruits and take care of the baby's. and had to move place to place. every time and they where so sad they didn't have a place to stay in. And life was hard.
Surplus of good food
And one day people discovered how to grow their own food so they stayed in one place and made homes for them so they didn't have to hunt any more. they just had to plant and then pull then eat.
Specialized dream jobs
And now they are going to make laws for community work to help to plant the food or pull or also make the food to eat. So people had some roles to help each other doing different jobs.
Trading
then people planted food and gathered food the kids where growing ant then they had more help because the kids where ready to help them. and also the kids helped make the food.
Specialized dream jobs instead of everyone farming. And everyone was happy to have a specialized dream job to work instead of just farming every single time.
okay I am going to work
okay
I'll give you this if you give me that salad.
But then when days past more and more food grown so they had a idea to trade food for something they don't have and they need to use it really badly. So that is why they traded things.