Potatoes (at least post Columbian Exchange) are a transformative staple - even more so than maize. They can grow where other grains cannot, and yield about three times the calories per acre than grain does. They allow areas like northern Fronela or the uplands of Ralios to be very productive - which they aren't. And we already have one transformative grain - maize. It also grows where other grains cannot, and yields about two and a half the calories per acre than wheat or barley does. And t
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