When Europeans first went to British Columbia, they found a post-apocalyptic landscape:
http://news.nationalpost.com/news/ca...of-a-holocaust
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When Europeans first went to British Columbia, they found a post-apocalyptic landscape:
http://news.nationalpost.com/news/ca...of-a-holocaust
Ludwik Krzywicki mentioned the same thing about epidemic diseases in North America:
https://babel.hathitrust.org/cgi/pt?...iew=1up;seq=85
https://catalog.hathitrust.org/Record/003553254
On page 70 he also mentioned the epidemics in British Columbia, described in the OP.
Why do you call them Native Americans? They are the Red Indians...