[Headcanon Discussion] How old are the nations?

[inner-wings.livejournal.com]

How old do you think the nations are? I don't mean their 'human' ages. I mean how long have they actually been around? Himaruya gives some rough estimates sometimes, but let's get more specific. Since the origins of nations aren't really defined in canon, what do you think about this? When were they each 'born'? Did a historical event or something else trigger it? China is old, but just how old? Did America exist before England showed up in the New World? How much of an age gap is there between the Kievan Rus siblings...and when did they first appear? At what point in history did the Italies pop up? Discuss~

And as always, be respectful when discussing.