According to rationalwiki, "the multiregionalism or multiregional evolution (MRE) hypothesis is a model of Pleistocene human evolution, which holds that the human species emerged in Africa 2 million years ago and developed its modern form in every area of ​​the Old World.” This specific theory states that modern humans came from different ancestors who descended from a more common ancestor, Homo erectus theory, Neanderthals are only the ancestors of some modern-day Homo sapiens, in the European area, and not the ancestors of Homo sapiens from other parts of the globe. The evidence for this, explained by the American Institute of Biological Science, is made as the fact that, after the common ancestor of each region, there were many interbreedings that gave rise to the single species of Homo sapien today. That said, the excess interbreeding suggested by this theory presupposes that this is the main cause of the which is why modern Homo sapiens do not appear different from each other despite having different characteristics.