[turder]

  Look up Black Sea deluge theory. Black sea was supposedly flooded (a bit later than the actual sea level rise from the ice melting after the ice age), around 7500 years ago, with levels rising up to 70m and turning it from a freshwater lake into Black Sea, and increasing its size 1.5x-2x.
  That event is one of possible explanations for the spread of what became Indo-European language/culture/people group, which a good deal of us belong to.
  Until the evidence for the Black Sea deluge was found, the Indo-Europeans were theoreticized to have come from area north of Black Sea (it is still so), but I think the initial push came from the now flooded areas.

[mmanfrin]

Easier to read:

Look up Black Sea deluge theory. Black sea was supposedly flooded (a bit later than the actual sea level rise from the ice melting after the ice age), around 7500 years ago, with levels rising up to 70m and turning it from a freshwater lake into Black Sea, and increasing its size 1.5x-2x.

That event is one of possible explanations for the spread of what became Indo-European language/culture/people group, which a good deal of us belong to.

Until the evidence for the Black Sea deluge was found, the Indo-Europeans were theoreticized to have come from area north of Black Sea (it is still so), but I think the initial push came from the now flooded areas.

[abritinthebay]

While true that it's a hypothesis - there's very little evidence for it and a bunch against.