In human genetics, the Mitochondrial Eve is 200,000 yrs Hybrid Human Beings.

Question: Do all humans have a common ancestor? Answer is No! Because, the context of Human common ancestor, beginns as explained in World History report. It wrote : A) From Hominids Species to Sapiens Species. There is no homo prefix for Sapiens, which in Eglish homo means homosexual. (In human genetics, the Mitochondrial Eve is the matrilineal most recent common ancestor of all anatomic "Wise Wise Sapiens Sapiens hybrid human beings since 200,000 years ago. Gays are people from 3.5 million yrs ago.

What is the main purpose of history? Why is it important to study world history?

World history helps us understand other people, their cultures, and how they see the world. 3. The past is one big experiment that helps us make better decisions today. ... World history helps us understand why wars happen and how to prevent them.

If you trace back the DNA in the maternally inherited mitochondria within our cells, all humans have a theoretical common ancestor. This woman, known as “mitochondrial Eve”, lived between 100,000 and 200,000 years ago in southern Africa. 

Our Species is Wise Sapiens and our  ancestor is Wise Sapiens  Where did our earliest ancestors come from?Africa.

Humans first evolved in Africa, and all of human evolution occurred on that continent. The fossils of early humans who lived between 6 and 2 million years ago, come entirely from Africa. Most scientists currently recognize some 15 to 20 different species of early human