The ice age, which came after the flood, provided the perfect conditions for mankind to spread around the Earth.
Cooler global temperature would’ve allowed people to pass through and even live in places like the Sahara Desert.
The ice age would’ve also lowered ocean levels, exposing land bridges allowing people to easily travel to places like North America.
Now during the ice age, those who settled up north were hardest hit by cold and snow. So those people made use of what was available, like caves for shelter and big game for food. Cavemen were just our relatives who lived in caves as they spread around the earth during the ice age.
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This post originally appeared at https://answersingenesis.org/media/audio/answers-with-ken-ham/volume-152/man-and-ice-age/