But divison is not just about nations.
1) It's also political differences in the same nation. Tribes fragment to smaller tribes, small tribes merge to large tribes etc.
2) There are divisions based on topics of interest, subcultures, etc. that aren't location-based, but thanks to telecommunications, global.
> Tribes fragment to smaller tribes, small tribes merge to large tribes etc.
When boundaries can change slowly enough we don't even notice. That's organic growth, that's ok.
> that aren't location-based, but thanks to telecommunications, global.
Thankfully I only have to close the browser tab to forget about someone Who is Wrong On The Internet. But I can't do that in meatspace.
Then you have learned nothing. The tribalism in humans is hardwired. It's not going away, whatever we may wish or do. The media doesn't create the divisions, they just profit from them.
The key to peaceful coexistence is properly delineated regions and nations, so that each thede can have their land without being afraid of being invaded and replaced.