Answer:
farming populations
Step-by-step explanation:
As we know, there are thousands of languages spread across our planet. Many scientists claim that these languages, or at least most of them, originated from a single language, even though these languages are now totally different from one another.
Languages are believed to have a common origin, but what is that origin? Well, it is not known, although there are several theories that try to explain this origin and end up contradicting themselves at one time or another. What is known is that this spread of different languages followed (and probably arose) through agriculture and, mainly, the spread of different agricultural populations.