system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do countries get their names?

Places like America, Britain, Kenya, Mongolia, Russia.

Who names countries and how does the name come about?
gpt
Really, they're named for all sorts of different things.

- Some of them are named for the ethnic groups that resided there before modern countries emerged — Britain, probably, for a celtic-speaking tribe that the Greeks wrote about in the 4th century BC.

- Some are named for individuals — America, for Amerigo Vespucci, the first explorer to establish that the land Columbus returned from was a new continent (as far as Europe was concerned) and not part of Asia.

- Some are named for natural features — 'Kenya' was the name for a mountain located there, in one of the natively-spoken languages.

Some countries even have totally different names in different languages. For instance, in English we call it 'Germany', based on a classical term for the tribes that lived there. But the Germans call it 'Deutschland,' which if you trace out its roots literally means something like 'people land' or 'popular land.'