Why do Civilizations have laws?

Civilizations have laws because if laws or rules were non existent and anyone could do whatever they wanted the world would be in chaos. Anyone would be able to kill anyone, they could steal from other people, little kids could be drinking beer and taking drugs, people could injure eachother, people could build whatever they want and drivers wouldn't have to have a driver's liscence, they could get drunk and crash and they could speed and go through red lights. Though i also think laws should not be to strict, like Hammurabi's code, like if you hit your father your hand would be cut off, or probably people would just riot and still cause chaos. I thought tghat Hammurabi's code was not very fair, although i see reasoning in his laws.

Farming is Crucial to Civilization!

After I watched the movie I thought that farming was one of the most important things toward building a civilization because without farming and growing your own crops you have to devote lots of time into gathering from fruit or tracking down prey and killing it with a bow and arrow. But with farming you do not have to go far to collect your food and further on if you control a herd of sheep or goats, you would be able to kill it, get milk from it and plow your crops with them. Then when your not wasting as much time, you can decorate your house or make steel to help crpos or weapons.