Majority Minority World in Future?

This article got me thinking about our future in the US as a majority minority country.  That's inevitable regardless of any government policy.

But then I thought--just looking at the US is limited--the world is already majority minority, and it has been for millennia, likely since humans left Aftrica.

I'm comfortable saying humanity is in the process of reuniting. What will the reunited world look like and act like.  Looks is relatively easy--the majority will be African-Asian.  Acts is hard, but I'd argue that based on the imprints left on former colonies, the European influence on culture and society will remain disproportionate to their descendants representation in the population.