It is a fact...

C
Guys i need help.. so in my ethics class we were discussing oppression,  feminism and a few other topics. 
All lead to this question: It is a fact that white people have conquered the world, colonized and made critical discoveries. If we are all equal why only white men were able to do all those things and not any other ethnicity? 
I'm looking for an answer or opinions of what you all think. Forgive me for posting this here and thank you to those who comment.