“If you go back to 13,000 years ago....seas were around 300 feet less than what they are today. It wouldn’t have been that hard to cross from Asia across Alaska.”
Any idea what man was doing back then to cause the seas to rise? Regardless, musta been some Al Gore type back then that stopped it and saved us all. Probably got rich off of buffalo turd credits.
At some point, around 10,000 years ago...an ice age was underway, and centered mostly over all of Canada and about one-third of the US. If you were at Chicago at that point....roughly two miles of ice was over the top of you. There are differing debates over how that ice age started.
But the ice age tended to end abruptly, and this leads onto a discussion that some meteor break-up action occurred, and a heck of action occurred in this North America area, that triggered a massive ice melt. This isn’t a month or year kind of thing....we are talking about in the course of maybe one single day of having oceans rise by a hundred feet.
So you had three basic ‘bad’ things occur in this timeframe. The ice-water run-off ran into the Pacific and Atlantic, which triggered the Gulf Stream to radically change. Second thing was the soot and ash that went into the atmosphere....which led to several hundred years of longer winters/shorter summers for most of the Earth. And then you had entire civilizations which existed along coasts which were wiped out by the higher water levels.