So, we came out of Africa
to the lush crescent along the Arabian sea
some sixty thousand years ago,
with curly hairs and heavy melanin
to populate the rest of the old world
and in less than ten thousand years
reached as far as the future prison land,
moving at the rate of about a mile each year!
We established settlements along the way
developing dermatological features
different from one habitat to another,
as we adapted to their weather and geography!
Since then humans have ruled the world by that fractional mutation,
despite an ocean of similitude between all the nations!