If you look at the history of the emergence of the first civilizations (Sumerian, ancient Egyptian and Harappan) on Earth, you can see that the first civilizations originated on the continents of Africa and Eurasia. In Eurasia, unlike Africa, there were more favorable living conditions (more water reserves, milder climate, richer flora and fauna), therefore, naturally, the population on this continent gradually increased.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.