The migration patterns Homo sapiens took out of Africa during the Pleistocene. the impact of those migrations was that Humans, according to a large body of scientific opinion, were a major contributor to the demise of Pleistocene megafauna. This is further explained below.
Generally, migration is simply defined as when creatures leave their "usual place of abode" and settle somewhere else, sometimes quite a distance away.
In conclusion, People changed the ecology and eventually became the top predators as they spread over the world
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