We have the account of God changing our languages and thus we all separated all over the world.
I wonder how different, maybe even peaceful if God didn't do that.
Looking at the story now it seems pathetic that he needed to do this to stop men wanting to reach the heavens to take a sneaky peek at him. We've been much further than mankind back then could have ever imagined and God isn't visible.
But yeah how different would history have been if this account never happened.