India 3000 years BC was conquered by the Arian people. White people. Some of the Arians did not stay in India but migrated further north - including Poland. That's not what the material is about, but the Arians created a cash system mainly to avoid mixing genes with the Dravidians (Denisovan genes). The material discusses the evolution of language and the relatedness of languages, analyzing the changes in languages through the centuries and how they relate to each other. Examples such as Latin and English illustrate the processes that languages undergo over time.