Zkuq on 12 July 2016
Having one government only would put power in the hands of very few people. I don't trust the few with the power would be able to use it responsibly. Sooner or later there would be a bad government for sure, and then everyone would suffer. And with the power such a government would have, fighting it would be extremely difficult. Multiple nations are needed to balance things out, if nothing else.
Remember: power corrupts.
