What factors led to white Europeans' success in colonizing large portions of the world, and why were other groups less successful?

by GypsySnowflake
BrMSP

So I'm clear, are you excluding Spain and Portugal from "white Europeans"? What countries are you including?

UnionJacket

Just to piggyback off of this question, how accurate is the book "Guns, Germs, and Steel" considered to be on this topic?