I've sometimes thought there should be exactly two levels of government... International (non-optional and all countries participate) and County (~2500 km2 and

I've sometimes thought there should be exactly two levels of government... International (non-optional and all countries participate) and County (~2500 km2 and several thousand to maybe 10 million max people). The world has gotten smaller and the effects nations have on each other larger. It's dangerous and it's not efficient. At the same time people have their local customs and laws (and spending habits). So let that be. But enforce bans on slavery, genocide, trade route monopolization, nuclear weapons, pollution etc. At an international level. As it is, it seems national governments are in general problematic... both to local communities and to the global community. I think eventually they can be done without.