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george.gauthierdc says
The Urals are the traditional border. They are also a natural border, the geologic suture between two of the cratons (subcontinents) that plate tectonics stithed together millions of years ago: Baltica and Siberia.
Loren S says
THE URAL MOUNTAINS
poornakumar b says
3. Ural Mts.
&
4. Caucasian Mts.
Nomadd says
They teach you that the Urals are the border, but there is no "natural border", because the two aren't separate. People came up with the idea that they were separate continents, not Nature.
linlyons says
3, i presume.
but what i've always questioned is why are they different?
why are they called europe and asia?
should N. America be divided by the Rocky Mountains?
should we differentiate between Asia and India?
i mean, they combined much more recently.