It can be called tribe, community, government or a state.

Conflicts will always exist. The tendency to be violent will always exist.

To resolve them, we use the tool of reason and logic available to us as humans to come up with a set of ethics, norms and morals.

These are called the natural law, from which natural rights to life, liberty and property are derived.

They are called natural as they can be derived by reasoning and logic by any human being without the existence of authority or coercion.

Whether or not everyone can do that is not something that can be predicted, so I don't want to comment on that.

But it can only emerge spontaneously and cannot be imposed.

And where the rule of natural law doesn't exist, individuals delegate the governance of it to someone else.

Governments are not inevitable or natural. They are man-made and exist only as long as individuals aren't moral and ethical.

I recommend reading 'Ethics of Liberty' by Rothbard for further elaboration about this.