Every single variation in "genetic trends" amongst cultures is negligible and otherwise entirely attributable to environmental factors.
The source of the ideas you're asserting as fact are very dark and extremely thoroughly debunked at this point. Honestly it's kind of shameful to present these 1920s ideas as modern.
Individually yes, genetics contribute to height, but the full range of height genetics exist in every culture.
https://www.nature.com/articles/d41586-021-03622-z
https://www.nature.com/articles/136736a0
https://www.imperial.ac.uk/news/193488/race-science-about-bi...
https://www.nature.com/articles/153604a0
https://www.hup.harvard.edu/catalog.php?isbn=9780674660038
https://sitn.hms.harvard.edu/flash/2017/science-genetics-res...
https://medlineplus.gov/genetics/understanding/traits/height...
https://www.jstor.org/stable/3180830
Every single variation in "genetic trends" amongst cultures is negligible and otherwise entirely attributable to environmental factors.
The source of the ideas you're asserting as fact are very dark and extremely thoroughly debunked at this point. Honestly it's kind of shameful to present these 1920s ideas as modern.
Individually yes, genetics contribute to height, but the full range of height genetics exist in every culture.