In the beginning, we were small groups, living in caves, governed by the strongest person. As travel became easier, groups merged together to form larger and larger groups of peoples who interacted peacefully, often governed by a leader, called a king or a pharaoh or an emperor or another local title.
In the beginning, leaders and their immediate families were fed better than anyone else. The resulting childhood nutrition made the leaders' children generally the best choice to lead the next generation.
As larger and larger groups came together, there were religious and moral issues in conflict. (If you have ever run a wedding you learned that families have different ideas of what should be included in a wedding.) The larger society has to figure out how to tell right from wrong. They are no longer able to just do things the way they have always done, as the groups inside the larger society will have different ways to do things. The laws have to distinguish between what EVERYONE agrees is wrong, and what some people think is wrong.
For instance, in some societies, an unescorted woman is automatically considered to be doing something wrong. As women become more educated and independent, they are often unescorted. It seems simple to say that women should be allowed to do whatever men do, but then the government must protect the women from people who disagree. What seems simple to an outsider is always a more complex problem for the society undergoing change.
As adequate nutrition became more common, the skills and intelligence of the "lower classes" became more apparent. This is because childhood nutrition is CRITICAL to brain development.
As people become better fed, they demand that they get a voice in the running of their government.
Therefore, as societies grow and prosper, they generally become more democratic either by revolution or by evolution.
Now travel is so easy that the entire world is linked into one worldwide economy. The internet is international. Criminals go to other countries to commit crimes, or use the internet to commit crimes in other countries.
We now need to figure out world rules for what is right and what is wrong, versus what has always been done by each country.
I have a few questions.
Why are overseas people allowed to put obvious scams in spam email and steal monies from our citizens?
When is it necessary to intervene when a county is abusing and/or killing its own citizens?
Do sanctions punish or strengthen a rouge government? Sanctions are used internally by the rouge government to say, "This is THEIR fault not OUR fault. Are we going to allow THEM to tell us what to do?"
Why are some countries allowed to export LOTS of stuff, but limit imports to protect their local businesses?
Why are some countries allowed to set the price of their money to make the price of imports higher than they should be?
Why are some countries allowed to spread violence in a futile attempt to enforce drug prohibitions?
It is no longer possible to live in splendid isolation. We are all interconnected. We need to solve the problem of how to live peacefully on our lovely planet.
Oh, and if you are one of those idiots who think more nuclear bombs will help with the peace process, may I recommend therapy? We still have plenty of atom bombs with which we could destroy the planet.