I want to know the answer to the following question:
About how many millions of people lived in Europe in the year 1000?
All the background I'm provided with is that "The estimated population of Europe grew from 35 to 80 million between 1000 and 1347, although the exact causes remain unclear: improved agricultural techniques, the decline of slaveholding, a more clement climate and the lack of invasion have all been suggested.". Is that enough to answer the question?
Answer: yes