> The definitions I've known have remained stable until very recently As stated, they were not. Race and ethnicity (and also words like breed and stock) were m

> The definitions I've known have remained stable until very recently As stated, they were not. Race and ethnicity (and also words like breed and stock) were much more synonymous 100 years ago. If you aren't keenly aware of semantic shifts like this, you will misunderstand older texts. I'm also not sure if you're actually suggesting that China and India are (by any definition) racially and ethnically homogenous. If you are, I must encourage you to study those countries more.