I want to know the answer to the following question:
What year was Blumenbach's treatise published?
All the background I'm provided with is that "The 1775 treatise "The Natural Varieties of Mankind", by Johann Friedrich Blumenbach proposed five major divisions: the Caucasoid race, Mongoloid race, Ethiopian race (later termed Negroid, and not to be confused with the narrower Ethiopid race), American Indian race, and Malayan race, but he did not propose any hierarchy among the races.". Is that enough to answer the question?
Answer: yes