Fascinating book. the collapse of the North American glaciers at the end of the ice Age would have produced humongous tsunamis that would have swept the islands and SEA.
“Would have swept”
The glaciers don’t melt overnight. It goes the course of thousands of years. Wooly mammoth time was the maximum extent of the last glaciation. We’re technically still in an ice age. Glaciations cycle up and back within ice ages. There have been 60 such events in the past 4 million years. Average 66 thousand years a cycle.
The press and climate “scientists” mischaracterize the last glaciation as “the last ice age” all the time.