I believe you're talking about Egyptian Hieroglyphs.
It was 'The Great Migration.'
"The Great Migration<span> was the movement of 6 million African-Americans out of the rural Southern United States to the urban Northeast, Midwest, and West that occurred between 1910 and 1970."</span>
I believe it was that the first ten amendments on the constitution (bill of rights) would be established. The first ten amendments give everyday basic free will to us.
<span>decimating the population, leaving the survivors wealthier</span>