B.S.
Ice ages have been coming and going for a few million years now and the Mammoths rode through them with no problem.
What was the difference last time? Man.
This is just a PC attempt to resurrect the Lib favorite Noble Savage myth
So who killed off the hundreds of other species that checked out at the same time?
Then, just as everybody was getting cozy, 12,000 years ago a comet hit mid-continent and busted up the residual icesheet in Canada.
We find the debris all over the American midwest.
The ice flows down the St Lawrence valley increased flooding the North Atlantic with ice. This triggered an almost instantaneous return to deep Ice Age conditions.
1500 years later that ice melted and the interglacial climate continued on to where we are today ~ 5,000 years overdue for the next glaciation.
The Mastadons dining on grass and other herbacious delights died out rather quickly with nothing to eat. Their predators also died out.
With the big cats out of the way both North America and East Asia were opened up to human settlement.
You kidding right? Cause otherwise you missed the part about the comet....and of course the ever problematic issue of pole shifts
Do you really think that primitive man armed only with sharp rocks tied to sticks could actually kill enough mammoths to cause them to go extinct? There is very little fossil evidence showing humans hunted Mammoths, if they killed off enough of them to cause extinction then there would have been much more evidence of hunting.
Hunting something that large with spears tipped with flint heads would have been too dangerous and too difficult to be attempted on any scale at all.
The proof of that are Elephants. Elephants never declined in numbers until the event of firearms, African natives rarely killed them and then they used traps to do so.
When the ice ages started to warm up, glaciers melted, leaving tons of water, small lakes etc. Grass and other vegetation grew in abundance giving rise to the large mammals that once roamed the earth, as the glaciers moved further and further north, the water gradually declined, meaning the vast amounts of vegetation could no longer be supported, causing the death of the giant mammals, except in certain areas, such as Africa and then only a few of the big species survived such as Elephants. The large carnivores also went because their food died out, or are you going to tell me that men using sticks and sharp rocks killed off the ferocious Cave Bears, bigger and meaner than grizzlies, and sabre toothed tigers?