Final answer:
The discovery of the earliest Anatomically Modern Homo sapien fossils in Africa supports the theory that early humans originated in Africa and then dispersed across the globe, interbreeding with Neanderthals in the process.
Step-by-step explanation:
The earliest Anatomically Modern Homo sapien (AMH) fossils found in Africa provide vital evidence that early humans emerged from Africa, then spread out to populate different parts of the globe. These fossils suggest that anatomically modern humans, with their rounded skulls, moderate brow ridges, well developed chins, and larger brain capacity of about 1,400 cubic centimetres, were similar to present-day humans and likely existed around 200,000 to 300,000 years ago. Crucially, these findings indicate that after Homo sapiens evolved in Africa, some populations migrated out of the continent, adapting to new environments and interbreeding with other hominid species like the Neanderthals.