Imagine your city were completely isolated from the rest of the world. One day, you and all other young adults in your city wake up alone in the wilderness, with no memory of anything. All other inhabitants have vanished, as have all the towns, roads, etc. Luckily, you all do know how to hunt and gather food, build shelters, and make clothes out of animal skins or plants, so you manage to survive.
Describe how you think the society would evolve over time, and why. Would people form families? Would they band together in groups? Would markets evolve? Some form of police? Some form of law? Some form of government? Make sure you explain why or why not!