Before people worked together people lived nomad lives. Everyone had to be hunter gathers. Hunter gatherers are people who hunted for there food and never had a permanet home moved and had to worry about were the animals are so they could hunt. As you can also see the hunter gatherer their food source it fish and bears.
In the agrocultrual revolution their food supply is improved they have cucumbers. They still hunted for fish and bears. The domestication of animals has changed and the wolve is hunting the bear. Animals like sheep and goats were farmed. Sheep were used for their wool so they could make coats. Goats were used for milk to drink. They started to make some permmenet shelters.
Trading started people would trade wool for fish or bears that were dead. sheep and goats were used frequantly for trading materials. The improvements were permmenet shelters. Cucumbers grew and were used as a stable food supply. Dogs were domesticated and used for hunting. Sheep were used for their wool to trade. Goats were used for their milk to drink.