How did Homo sapiens overcome Neanderthals, who had larger brains and stronger bodies?

The neanderthal brain capacity of about 170, and the Homo sapiens brain capacity of about 140, it can be said that the Neanderthal brain capacity than Homo sapiens, but most of the Neanderthal brain capacity is occupied by the sensory area and motor area, for communication, thinking, etc. occupies less space in the region.

In detail, the brain volume does not mean that the effective capacity is large, Homo sapiens is high cranial type, on the contrary, the Neanderthal (Neanderthal), Homo erectus generally low cranial, forehead this piece of the forehead is almost no different from monkeys. And this piece is responsible for language ability, logical thinking ability, and imagination, so the Neanderthal language ability, imagination, and logical thinking ability are far from being able to compare with Homo sapiens. For example, Homo sapiens can imagine the concept of a country, or a company, but Homo erectus has only the concept of survival, and can never reach the realm of Homo sapiens.

This is one of the important reasons why Homo sapiens could beat Neanderthals.

Other reasons such as Neanderthals' long growth cycle is also a very important factor, Homo sapiens 16 years old body is fully developed, while Neanderthals have to grow to 22 years old to be considered an adult, Neanderthals have a very long development period, which led to their adulthood before, there is more time is very vulnerable, and thick muscles need to consume more calories, so they must consume a lot of meat, if Without large animals for them to hunt, they could not survive, plus the above-mentioned brain occupancy ratio, which led to the impossibility of their emergence of farming civilization, which led to the impossibility of settlement, building houses, the impossibility of architecture, the impossibility of countries, in short, if you let a Neanderthal integrate directly into us, he may become a great genius, but you have to let him build a civilization from scratch, he is not in that condition.

Finally, there is still a great deal of speculation about the cause of Neanderthal extinction that lacks evidence. But one thing is based on, is that the Neanderthal social group is very small, the community is small, so the population is not large, and Homo sapiens out of Africa for the second time, relying on not only weapons language social structure, there is a stronger body immune system and stronger environmental adaptability, to be able to rely on a large number of breeding and take root, after a long time after the accumulation of population advantage, let the Neanderthal is difficult to survive.

I tend to war said, if you look at the history of the disappearance of most of the ethnic groups is the war after the fusion of large ethnic groups and then disappear more, then than the natural disasters and plagues destroyed part of the regional people, war and killing more unforgiving, how many species disappeared at the hands of humans, the number of bison in North America on the verge of extinction and the extinction of the sheltering travel pigeons is a cruel example. Neanderthals disappeared at the hands of Homo sapiens is not at all unexpected and exceptional, the history of the founding of the United States is a history of Indian lamentation, not that there is a difference in intelligence, but the civilization generation gap, behind the powerful organization and productivity differences.

That's why I said that the technological advantage is just, and is the history of war assimilation that is probably a hundred or hundreds of thousands of years long. As for not finding evidence, it is also quite normal, after all, the total number of all humans including Neanderthals at that time may not be much, after so many years no trace is quite normal. And even if there is found, stone fighting traces are difficult to prove who hit who. The archaeological proof is hard to prove anything, but if you look more at human history and launch a theory of war, I think it's normal thinking.