That's the explorers, yes, but the settlers? Remember that the 1700s was so cold relatively, the soldiers march even in summer with thick jackets and smokepipe

That's the explorers, yes, but the settlers? Remember that the 1700s was so cold relatively, the soldiers march even in summer with thick jackets and smokepipes. Though, there was also the introduction of potato, which led to massive demographic explosion in the Protestant Northern Europe. But I do see your point. Still, the Germanic tribes were the first climate refugees that we know, maybe after the 8.2 kya event [0] that led to the first cities in Fertile Crescent [0] https://en.wikipedia.org/wiki/8.2-kiloyear_event https://en.wikipedia.org/wiki/8.2-kiloyear_event