What exactly is black though? Is it just dark skin or is it specifically those with African genetics? Because you have dark skinned people in Australia, Papua N

What exactly is black though? Is it just dark skin or is it specifically those with African genetics? Because you have dark skinned people in Australia, Papua New Guinea, Southeast Asia, India, etc. Those people are very genetically dissimilar from Africans. In fact, in many cases, more dissimilar than someone from Africa and someone from Europe.