Curious to learn whether Nanderthaler had specific pack strategies in claiming new territories during expansionist moves. What were their comparative advantages in their expansionist period?
What were the decisive reasons for a substitution regime and not coopetition in conjunction with Homo sapiens?
Regarding Neanderthals, apart from Africans (ie those who live in Africa), everyone else in the world share some Neanderthal DNA, between 2% and 4-5%. They had relationships with homo sapiens, and many children with both sets of DNA. That DNA has now been diluted because it seems that Homo sapiens did not treat them well and they became extinct quite a long time ago. It is now known by researchers that they were in fact equally as intelligent as homo sapiens...
The problem is seen in a completely different light: Neanderthals BEFORE Cro-Magnons did not know how to build dwellings! The success of the Cro-Magnons was associated with their mobility in everything (including the "sale of brides" hundreds of kilometers away). Which was due to the fact that they learned to build dwellings in open areas! And Neanderthals settled only in mountain caves, which are not so many, and they were attached to them. This fettered their migration, deprived them of the opportunity to choose more profitable areas of residence, and, in particular, led to inbreeding. Also, the caves were a critical population limiting resource! All this led to a systemic crisis of the Neanderthal species.
So the strategy of the Neanderthals seems to be weak and very limited - capturing the caves.
http://www.synerjetics.ru/article/two_ancestral_lands.htm
How have you concluded that genus homo hominins had "pack strategies"? When was the "expansionist period" of homo neanderthalensis you are talking about, and with which other archaic humans do you want to compare them: homo erectus, homo heidelbergensis, or some other group? What do you mean by "substitution regime" (I assume you mean substitution by homo sapiens since homo neanderthalensis became extinct)? There are many possible reasons for neanderthalensis extinction, including changes in climate, competition with anatomically modern humans, and, possibly, neanderthalensis lacking specific capabilities for adaptation that modern humans had. I think it is most likely that all of those factors operated to various degrees at different times and in different locations.