Justify for what reasons the right arose. what is it for?

I’ll start with what the right is for. The main reason why law is an integral part of society lies in the fact that it is necessary to establish a clear framework and clear rules of the game, according to which society can exist. Rules should govern relationships between different people and different groups of people. And these rules arose with the advent of the first cities, when it was necessary to issue some laws in order to regulate relations between different members of the ancient society. Although they were at that time and primitive, but still.