Let's say people united under their individual languages and separated. If the tower of Babel was somewhere in Iraq then how did language hubs get to Austrailia, South America, and even Africa. These distances would be highly unlikely. If this happened language wouldn't prevent people from trading and eventually learning each other's language and establishing adjacent cities and towns.

If you look at migration maps based on DNA you will see that migration went north from Africa. In the Bible it states that migration came to Babylon from the East.

This is most likely a myth.

ok, if thats how you see it. :)

I think this is an important distinction.

It's not how I see it, but where the evidence points.

Those are two different things.