Because their society is unstable. They allow anyone and everyone in from many different cultures. Hence the cradle part.
The system of escape routes and hiding places for runaway slaves was known as Underground Railroads.
In the US, slavery led to the creation of such escape routes and safe houses in order to help slaves escape and lead a normal life after that. They would either run to Canada or free states within America which abolished slavery. One of the most famous leaders was Harriet Tubman.
The Voynich manuscript is an illustrated codex hand-written in an unknown writing system. ... The manuscript is named after Wilfrid Voynich, a Polish-Samogitian book dealer who purchased it in 1912. Some of the pages are missing, with around 240 remaining.
<span>to support U.S. trade goals by helping to preserve China as a nation
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