Which country has the best Laws, overall, and how could they improve them to make them suitable for adoption by all other countries?

Humans are all basically the same, yet we are divided into different groupings. Can we not try to find a way to standardise ourselves, at least as far as rules go?
If you think that we can, then how exactly do you think this would be done?
You don’t have to offer a complete outline. Components will do.
What points would be important to you in such an exercise?