Food Surplus

After awhile people started discovering new thing that could be done to help and benefit their people. But no one is willing to work for free. Wheat, rice and barley were available to farmers and were the best domestic food back then. They were very nutritious and could be stored for long periods of time. After animals were domesticated they were attached to plows so that they could cover more land than humans could alone thus enabling farmers to plant more food.

This created a surplus of food, you know extra. This extra food was used to pay the specialized workers. Specialized workers could do things like make plaster for insulation purposes for homes. Metal workers could melt ore's and make metal weapons for defense or hunting and make tools for working. Farmers usually had specialized workers make personal granaries for their farmer so that they could pay other specialized workers for their services.

Another positive that comes from having a food surplus is that you don't have to worry about what you are going to eat that day and you don't have to worry about feeding your family. This gives you days off to relax and I don't really know what people did 13,000 years ago to relax on a day off but I know they might have tried to learn a new skill.