MHIS121 Lecture 2: Session 1 - 2017 Week 2 Lecture 2 - Nicholas Baker
22 Aug 2018
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Document Summary
1327-1377) siena: the fourth horseman: pandemic, yersinia pestis. The first horseman: famine: population had expanded between 1000 and 1300 ad, after the 1300s, as we move into 14th c, europe goes into a period of demographic decline. Hard ceiling on medieval society for producing food (hit it in 14th c) Seed to yield ratio 1:3 (today it is 1:300) can only eat 2/3 of what they produce. Hit to margins on viable farmlands pushing into marshlands and up the alps as far as they can. Agrarian revolution is very fragile: climate change. 14th c, the northern hemisphere enters the little ice-age". Temperatures decline by 1-2 degrees celsius on average enough to change the weather and climate for europe. It is colder + wetter than it had been previously. Summer + spring is shorter; winter is longer + harder. Less rain in africa, more rain in europe.
