Extinct large game (c. 8000 BC - North America):The number of megafauna, large game that was a typical feature of this area, has been decreasing for some time. and that, probably, was what attracted the first settlers here. Now these animals seem to have disappeared entirely. It appears that mastodons, woolly mammoths, giant ground sloths, tapirs, camels and giant armadillos are extinct in North America.
Mass Death
One of the reasons for the mass extinction is that the glaciation is ending, and with the climate becoming warmer and drier, the kind of food required by these large animals has all but disappeared. But overhunting was perhaps also an important factor. The fluted arrowheads proved to be efficient weapons.
And there were still numerous occasions when hunters broke up entire herds, to make the animals fall from the tops of rocks or to surround them in narrow passages and then to slaughter them. There are still many game animals, but the disappearance of larger species and the increasingly warmer climate will inevitably produce profound changes in people's way of life.