What are now defined as fringe works, described the ancient Aryans, a Nordic sub-race of the white race, as they called themselves, and were described, moving in great waves, conquering country after country, but ultimately fading away, as their people mixed genes with the locals. Look, let’s ask the Indians about this, as reported in an article, “How Genetics is Settling the Aryan Migration Debate”:
https://www.thehindu.com/sci-tech/science/how-genetics-is-settling-the-aryan-migration-debate/article19090301.ece?fbclid=IwAR0ja0UrKIK12mpfP4tKllOhDhIZBO4P4JVMQd4BTJ6e0pBqRCtM90T0pKY
“New DNA evidence is solving the most fought-over question in Indian history. And you will be surprised at how sure-footed the answer is, writes Tony Joseph. The thorniest, most fought-over question in Indian history is slowly but surely getting answered: did Indo-European language speakers, who called themselves Aryans, stream into India sometime around 2,000 BC – 1,500 BC when the Indus Valley civilisation came to an end, bringing with them Sanskrit and a distinctive set of cultural practices? Genetic research based on an avalanche of new DNA evidence is making scientists around the world converge on an unambiguous answer: yes, they did. This may come as a surprise to many — and a shock to some — because the dominant narrative in recent years has been that genetics research had thoroughly disproved the Aryan migration theory. This interpretation was always a bit of a stretch as anyone who read the nuanced scientific papers in the original knew. But now it has broken apart altogether under a flood of new data on Y-chromosomes (or chromosomes that are transmitted through the male parental line, from father to son).