Interesting Maps

Post edited & toned down.
Yes, I got the wrong river - its the Ural river.
I've no objection to Afro-Eurasia either, but that physical connection is very narrow in proportion to the landmass sizes.

I think landmass is the way people generally use the word continent except for one - which has a political / conceptual division (ie. a geographic concept being defined as if it is two nation states).
Its the political division that is the issue.

Well most people would use the ural mountains as the primary marker of the border not a river that's maybe 5% of the border length, so I'm not sure if I'm happy for you to be the bell weather of what most people are doing.

But why is a narrow strip of land a good divide between continents but a mountain range isn't?

All continents have some debate over them, is it the Americas or North and south America, is it Oceania or Australia? Is Antarctica even included? They are all arbitrary definitions at the end if the day. Even why is north up? Or the Americas on the left?

We just make up definitions that seem useful at the time and if they are, they catch on and become commonplace.

Anyway this will be my last engagement on the matter.

Why keep building on the limited agricultural land?

I know, Dublin cant throw too many stones in that that regard either.

If one mountain range (the Urals) and one river (also Ural) can be deemed by convention to be a dividing line between continents (whether convened 3,000 or 400 years ago) then what is to stop any mountain range & any river being deemed to have such meaning.
Ireland alone could contain 7 or 8 continents by such conventions.

People, lets loosely say, powerful people in their day(s), came up with such ideas (for the worst reason(s) : maybe, possibly control ) – that doesn’t mean they have to be accepted unquestioningly century after century indefinitely.

On a map, Panama 67km and Sinai/Suez 120km are noticeable extremely narrow geographic features between vast landmasses.
Whereas from a plane or the ISS, the roughly 2,630km Ural Mountains / river shows no reason why it manifests as a boundary between notional continents – with nothing but similar land visible for thousands of km in every direction.
I’s just like, my opinion man 🙂

It's a terrible map but showing deposits of Lithium in Ireland . Seemingly fair deposits in the south east