I thought I read someplace that sun spots had to do with the 1600's mini-ice age? Tying the fall of for example the Mayan civilization with the triggering of an

I thought I read someplace that sun spots had to do with the 1600's mini-ice age? Tying the fall of for example the Mayan civilization with the triggering of an ice age due to decrease in agricultural activity and associated re-forestation seems like a stretch.