the topic of this video is about why the Americas didn't have a plague that could have wiped out millions of Europeans like how the Europeans had Mumps, Cholera, TB, etc. But the whole thing is about the origin of plague diseases like those mentioned above. So the answer to why their was no america poxes is that the old world didn't have good domesticated animals, and because of that they din't have those diseases that Europe would later bring over. Of course a disease crossing species is very rare so you would have to raise it the way cites did, by having animals in the streets,and not knowing how to separate waste from water. So that is it their was no good animals for domestication in the new world that their was no reason to have more than a handful of cites. so that is a brief summary of that video the link at the bottom, and see you next post.
https://youtu.be/JEYh5WACqEk
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