As a good example of this, the peoples who now call themselves Europeans are descended from central Asians who exterminated (entirely on the male line, mostly o

As a good example of this, the peoples who now call themselves Europeans are descended from central Asians who exterminated (entirely on the male line, mostly on the female)[1] the prior indigenous European population about 4500 years ago. The Eurasian continent's geography is conducive to large scale migrations of people over relatively short time periods. The suspected proto-indo-european migration that is the suspected ancestor group of both western European and south Asian Indians is a good example. It's a wildly complicated area where we have archaeological, linguistic, and now genetic evidence that can be difficult to tease out and then to make things even harder there are often political complications too. [1] https://en.wikipedia.org/wiki/Genetic_history_of_Europe#Genetics_of_modern_European_populations https://en.wikipedia.org/wiki/Genetic_history_of_Europe#Gene... [2] https://en.wikipedia.org/wiki/Proto-Indo-Europeans https://en.wikipedia.org/wiki/Proto-Indo-Europeans