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I’ve been following your blog for a little while, and I wanted to say thank you as someone who used to study history and now works in a different field. Question about your recent series on agriculture: do you have a sense of why rice didn’t spread farther west?
I was actually talking about this with a colleague who works on medieval Italian urbanism, but the answer is: it did! In regions where there was enough water, by the late Middle Ages, we are seeing rice cultivation in parts of Italy.
Mostly, the limiting factor here is you need a favorable temperature (so you can't go too far North; true even in China) and lots of water. And the warmer parts of Europe and Africa tend to be too dry, while the wet parts of Europe and Africa tend to be too cold.
Thanks! That's fascinating. So high rainfall was critical to rice production? That's consistent with what I was reading in David Abulafia's The Boundless Sea about rice production in and around the Indian Ocean being tied to the monsoon season & rainfall.
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