Answer: What's the question?
Explanation:
srry i don't understand a lil slow today
The 25 000 is a good tip: what happened then?
It was the time of the last Glacial Maximum (Ice age). So either the Bering Strait was frozen over at the time, or the sea water was lower because so much water was taken up by the glaciers (or, most likely, a combination of the two).
