### ch03p93 Greenland Vikings died out due to economics > At 1000 CE, the early Greenland Vikings were eating plenty of dairy products. But four centuries later, they weren't eating domestic animals any longer, and they didn't even have any access to dairy products. The Greenlandic Vikings traded walrus and narwhal ivory — but as supplies of African ivory started to enter the market, their goods were no longer so valuable. #articleseed/addendum lessons from history, we're not so different, ancient towns fail for economic reasons and so do modern ones (like West Virginia and the rust belt) - [[Tamed by Alice Roberts#ch03p93 Greenland Vikings died out due to economics|View in Vault]]