How and why did modern humans succeed and populate most regions of the world?

in this modern era every individual wants to having a unique identity.. for their unique Identity they explore many things in different areas related to the tradition , culture and all.. moreover in this competitive era every individual have the willing to do different rather than others so that's why they succeed more in their life rather than and others..in fact we all know that the technology and hence their techniques day by day so that's why every invisible also want to use all that techniques by which they wanted the respectable identity..

the real answer is b