It Had A Huge Impact
On top of that, one of the effects of the gigantic ice sheets was a large drop in the sea levels of the world. There was so much water in the ice that the oceans had been depleted back then. It is the reason the land between Siberia and Alaska had been exposed. In turn, this let humans cross to North America.
It Had A Huge Impact
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What The Theory Says
The first journeys from Siberia to Alaska probably took place over 30,000 years ago. Aside from that, these travelers probably stayed on the land bridge for quite some time. The glaciers that covered North America started to disintegrate 15,000 years ago. There is a theory saying that this served as their cue to make their way from Beringia to North America to further down south later on.
What The Theory Says
